(PLS HELP will mark brainliest!) Compare and contrast the alkali metals and the alkaline earth metals. Discuss their physical and chemical properties, their magnetic properties, and their electron configurations.

Answers

Answer 1

Answer:

I have a picture from my excerpt that basically answers all of that!

Hope it helps!

Explanation:

The attachment

(PLS HELP Will Mark Brainliest!) Compare And Contrast The Alkali Metals And The Alkaline Earth Metals.
Answer 2

The alkali metals and alkaline earth metals has different physical and chemical properties due to difference in their valence electrons.

Comparison of physical and chemical properties of alkali metals and the alkaline earth metals.                       Alkali Metals                             Alkaline earth metals

·Electronic      [Noble gas]ns1                                  [Noble gas]ns2

configuration

·Reactivity      Comparatively more reactive     Comparatively less

                                                                         reactive                        

·Hardness       Soft and can be cut by sharp     Comparatively harder

                      knife

·Valency         One valence electron               Two valence electron

·Ionic charge   +1                                              +2

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Related Questions

C12H7Cl3FNaO2 what are them elements in that chemical formula

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assuming you are asking for the names of the elements in that formula , the answer is

carbon
hydrogen
chlorine
fluorine
sodium
oxygen

define empirical formula and molecular formula with example of each​

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Hi -----):):$/$:); wyd n

How much energy is needed to turn 450 g of zinc into liquid metal at its melting point? (Round your answer to the nearest tenth) *

Answers

Answer:

Explanation:

Latent heat of fusion of zinc = 7.322 kJ / mol

molecular weight of zinc = 65 g

450 gram = 450 / 65 = 6.92 mole

Heat required to melt 450 g of zinc = 6.92 x 7.322 kJ

= 50.67 kJ .

= 50.7 kJ .


Jose adds five grams of a chemical to one liter of liquid and observes a reaction. If the reaction is endothermic, what will happen?
A
The liquid's mass increases; therefore, the volume of the liquid will increase
B
The liquids' mass decreases; therefore, the volume of the liquid will decrease.
С
Energy is released during the reaction; therefore, the temperature of the liquid will increase.
Energy is absorbed during the reaction; therefore, the temperature of the liquid will decrease.
D

Answers

Answer:

D. Energy is absorbed during the reaction; therefore, the temperature of the liquid will decrease

Explanation:

In a chemical reaction, the reaction is said to be ENDOTHERMIC if the reaction utilizes or uses energy instead of given it off. In this reaction, Jose adds five grams of a chemical to one liter of liquid and observes the reaction.

According to this question, the reaction is ENDOTHERMIC. This means that energy is absorbed or used up during the reaction; therefore, the temperature of the liquid will decrease i.e. the liquid used in the reaction will become COLDER.

Which element would be the least similar to magnesium (Mg)?
A. Sr
B. Na
C. Be
D. Ca

Answers

Answer:

B: NA

Explanation:

this is the apex answer

Problem Page Decide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:*

Answers

The question is incomplete, the complete question is shown in the image attached.

Answer:

1) No, it has the right number of valence electrons but does not satisfy the octet rule.

2) Yes

3) No, it has the wrong number of valence electrons, the correct number is 16

Explanation:

If we look at the first structure in the image(HCN), it easy to see from inspection that nitrogen has three valence electrons as it is normally supposed to have. However, if we count all the electrons around nitrogen, we will notice that they are six instead of eight. Thus nitrogen has not satisfied the octet rule here.

The structure HBr satisfies the octet rule, hence it is a reasonable Lewis structures for the compound shown.

CO2 has 16 valence electrons but the structure shown contains about 20 valence electrons hence it is not a reasonable Lewis structure for the compound.

Yes, in HCO⁺ the proposed lewis structure is reasonable.

No, COCl₂ has the wrong number of valence electrons.

No, OH⁻ has the right valence electron but does not obey the octet rule.

The correct structure for the question can be seen in the image attached below.

In the proposed structure, the number of valence electrons in HCO⁺ is: ( 1 + 4 + (6-1) ) = 10e⁻

Thus, the atoms obey the octet rule and the number of calculated valence electrons corresponds with what we have in the given structure.

Yes, the structure is correct and reasonable.

In COCl₂, the central carbon bonding to the oxygen is supposed to be doubly bonded and not singly bonded.the number of valence electron in COCl₂ is: ( 4 + 6 + (7 × 2)) = 24e⁻

The calculated number of valence electrons is different from the given structure of 26e⁻, so we can say No, it has a wrong number of valence electrons.

In the third structure, oxygen is supposed to have three lone pairs of electrons in order to obey the octet rule.the number of valence electrons in the structure is: (6 + (1+1) = 8e⁻

But both H, as well as, O do not obey the octet rule. Therefore, we say No, it has the right number of valence electron but do not obey the octet rule.

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Why don’t all salts make a one-to-one ratio?

Answers

Answer:

because all types of salts are made up of different substrances

All salts do not make a one-to-one ratio because the salts are composed of different ions that combine together in different ratios.

A salt is an ionic substance. Salts are formed by combination of a cation and and anion.

Different salts are comprised of different ions. The ratios in which the ions combine in each salt is not the same.

Hence, all salts do not make a one-to-one ratio because the salts are composed of different ions that combine together in different ratios.

Learn more: https://brainly.com/question/5110211

does anyone know how to do the alien periodic table im stuck and cant go furhter

Answers

Answer:

The answers that I drew in blue are for the first part then it will say click a nonmetal or something which is the one I drew in Red.

Explanation:

Hope this helps

I WILL GIVE YOU BRAINLIEST HELP ME!!!

Answers

Answer:

It is the first one

Explanation:

Due to the fact that political discretion would be so only a few or a group of indviduals could control or know certain things

Answer: yeah is the first one

Explanation:

if there is a sample 50 grams of naoh how many grams are na

Answers

Answer:

Which number is IRRATIONAL? A) √12 B) √36 C) √64 D) √144

Explanation:

Question 5 (4 points)
One type of dipole-dipole force found in water is

A. ion-ion attraction
B. hydrogen bonds
C. dipole-ion bonds
D. molecular bonds

Answers

Answer:

B. Hydrogen bonds.

Explanation:

The dipole dipole force that is found in water is hydrogen bonds.

Where are earthquakes most likely to occur? A. Where Earth’s tectonic plates are sliding past each other. B. Where magma cools slowly beneath Earth’s surface. C. Where Earth’s lithosphere is in constant, slow motion. D. Where Earth’s seafloor is spreading into deep ocean trenches.

Answers

Answer:

d

Explanation:

Answer:

A

Explanation:

When the tectonic plates slide across each other they cause a huge vibration making the area around Shake if its a big enough of vibration it can breach the surface causing a huge crack.

Which two parts are needed to make a neutral atom of nitrogen A. Electron clouds with a total of 14 electrons B. Electron cloud is a total of seven electrons C. A nucleus with seven protons and seven neutrons D. A nucleus with three protons and four neutrons

Answers

Answer:

B. Electron cloud is a total of seven electrons

C. A nucleus with seven protons and seven neutrons

Explanation:

An atom is consist of three subatomic particles: electron, proton, and neutron. Proton are positively charged particles and neutron have neutral charge, they both are present inside the nucleus in the center of the atom whereas electrons are negatively charged and surround the nucleus in a definite orbit.

Nitrogen is an element with 7 electrons in its outer orbit. As electrons are negatively charged so nitrogen atom will require 7 protons inside the nucleus to form a neutral atom of nitrogen. So, A neutral atom of nitrogen will consist of 7 electrons and 7 protons.

As, neutron has neutral charge so it will not affect the composition of neutral atom of nitrogen.

Hence, the correct options are:

"B. Electron cloud is a total of seven electrons

C. A nucleus with seven protons and seven neutrons ".

Answer:

B and C

Explanation:

Why sodium called alkali
metals .​

Answers

The alkali metals are so named because when they react with water they form alkalies. Alkalies are hydroxide compounds of these elements. Alkalies are very strong bases that are caustic

Answer:

The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr).

Explanation:

They are called alkali metals because they are in the alkali group.

FUDQPITJ8PXzpl6qZcrfQD6A/viewform?hr_submission=chklyut_jwBE
Potassium (K) is a soft, silver, solid metal. It is widely found in food we eat.
11
Na
22.990
Sodium
19
K
39.098
Potassium
37
Rb
85.488
Rubidium
Which statement correctly and accurately describes atoms of Rubidium?

Answers

Answer:

What is all that stuff

Explanation:

please help me!! thank you so much!!​

Answers

Answer:

13.75

Explanation:

gets halved every 8 days so halved twice

Which molecule is the most polarizable?
N₂
O2
CH4
CO2

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Answer:

CO2 I was wrong about methane

Pleaseee help it’s timed!!

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Answer:

voliiviloou

Explanation:

volaiviolu

Answer:

Rows

Explanation:

What are some real world examples of physical change and chemical change ?

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Answer:

Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding. Often, physical changes can be undone, if energy is input.

Explanation:

PLeaseee Help Asap!!!

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The correct answer is A) an ore

True or false igneous rocks can only turn into metamorphic

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Answer:

this is false igneous rocks can turn into either sedimentary rocks and they can be metamorphic

Explanation:

i hope this helps your welcome :)

Answer:

False

Explanation:

Igneous rocks can turn into sedimentary rocks as well as metamorphic.

can there be a negative number answer in a combined gas law problem

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Yup!! person above is correct

Use “impact force” in a sentence.

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Answer:

The impact force of a car hitting a building can traumatize someones body.

Explanation:

In which cell will the molecules diffuse out A or B

Answers

The answer: the answer should be B
Sorry if its wrong

Because of metallic bonding, when light is pointed at metals, they become
Oshiny
O malleable.
O ductile.
O conductive,

Answers

Metals become shiny when light is pointed at them.

Owing to the electronic configuration of metals ,metallic bonding exists in metals because of which when light is pointed at them they become shiny.

What is electronic configuration?

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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The layer of skin that forms the fingerprint is called the

Answers

Answer:

Explanation:

The fingerprints are produced from a layer in the skin called the papillary layer, which is a layer within the dermis layer of skin. It produces an extra thick layer to form the ridges of fingerprints.

Answer:

Dermis

Explanation:

The inner layer of skin is called the dermis. It is thicker and provides the protection and support that the skin provides the body. The two layers are separated by the basement membrane. Fingerprints are produced by the epidermis.

Which is a change or signal in the environment that can make an organism
react? *
stimulus
O reaction
impulse
O
response

Answers

Answer:

I'm pretty sure its stimulus

What kind of graph would use for this data? The months of the year and the amount of rainfall, and why

Answers

Answer:

A Desert Climatogram is a graph that shows the temperature and rainfall, for each month in the year, for the Desert.

Explanation:

Rank the three elements according to their ionization energy,
from highest to lowest:
Chlorine (CI), Strontium (Sr), lodine (1)

Answers

Answer:

Highest——— Lowest

Chlorine > Iodine > Strontium

List three organelles found in cells and describe their functions.

Answers

nucleus: controls cell

cell membrane: controls what goes in and out of a cell

cytoplasm: where chemical reactions take place

Answer:

Nucleus: DNA Storage

Mitochondrion Energy production

smooth Endoplasmic Reticulum (SER)   Lipid production; Detoxification

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