Answers
Answer:
A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid and no complete agreement on which elements are metalloids. Despite the lack of specificity, the term remains in use in the literature of chemistry.
A series of six elements called the metalloids separate the metals from the nonmetals in the periodic table. The metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. These elements look metallic; however, they do not conduct electricity as well as metals so they are semiconductors. They are semiconductors because their electrons are more tightly bound to their nuclei than are those of metallic conductors. Their chemical behavior falls between that of metals and nonmetals. For example, the pure metalloids form covalent crystals like the nonmetals, but like the metals, they generally do not form monatomic anions. This intermediate behavior is in part due to their intermediate electronegativity values. In this section, we will briefly discuss the chemical behavior of metalloids and deal with two of these elements—boron and silicon—in more detail.
Explanation:
i hope this helps you :)
Related Questions
Determine the change in energy when an electron transitions from n= to n=5?
Answers
Answer:
ΔE = 13.056 ev
Explanation:
Energy associated with nth state is,
En = -13.6/n²
For n = 1
E₁ = -13.6 / 1²
E₁ = -13.6/1
E₁ = -13.6 ev
Kinetic energy of electron = -E₁ = 13.6 ev
For n = 5
E₅ = -13.6 / 5²
E₅ = -13.6/25
E₅ = -0.544 ev
Kinetic energy of electron = -E₅ = 0.544 ev
Wavelength of radiation emitted:
ΔE = hc/λ = E₅ - E₁
by putting values,
ΔE = -0.544ev - (-13.6 ev )
ΔE = 13.056 ev
In the reaction A + B -> C + D, what are the products?
A. A and B
B. A, B, C, and D
C. C and D
D. A and C
Answers
Answer:
C
Explanation:
just took the test
Question 8 of 10 Which wave property is related to the pitch of a sound? A. Crest height B. Frequency O C. Amplitude D. Rest position
Answers
Answer:
frequency
Explanation:
i took the test
in which shell duplet rule is applied, why?
Answers
Answer:
In first shell duplet rule is applied because first shell contains maximum 2 electrons
Explanation:
Question 3
When an electron absorbs energy and jumps it is:
a negative ion
in the ground state
a positive ion
in the excited state
Help please
Answers
Answer:
in the excited state
Explanation:
Because in excited state an atom has more energy
why is an atom electrically neutral
Answers
a covalent compound that shares two pairs of electrons.
What is it?
Answers
How many atoms of Hydrogen are in the 3 molecules of glucose?
3C6H12O6?
Answers
Answer:
36 hydrogen atoms in 3 molecules of glucose
Explanation:
The formula for one molecule of glucose is C₆H₁₂O₆
There are 12 hydrogen atoms in one molecule so in three molecules there would be 36
Which of the following best describes a galaxy?
A. a particle of debris in the solar system that does not act as a satellite of any planet.
B.a visible body of liquid or frozen crystal droplets suspended above a planetary surface
C. a massive system of stars, gas, dust, and dark matter bound together by gravity
D.The visible path of a meteoroid as it enters Earth's atmosphere
Need help ASAP
Answers
Answer: the anser is a
Explanation:
The galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity. Option C is correct.
What is gravity?The galaxy is a force of attraction that attracts the particles or abject towards themselves and it gets double the mass of the object and has the capacity to bound the objects.
In a galaxy all are revolving around the orbits and satellites due to gravity and all these stars dust etc are also part of the universe which is bounded by The galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity
Therefore, Option C is correct.The galaxy is a massive system of stars, gas, dust, and dark matter bound together by gravity
Learn more about gravity, here:
https://brainly.com/question/4014727
#SPJ6
Which of the following is an element?
A
MgBr
B
HCl
C
O
D
Cu(SO4)3
Answers
Oxygen is a chemical element with symbol O and atomic number 8. Classified as a nonmetal, Oxygen is a gas at room temperature.
Is it a model answer key
Answers
Answer:
is what a model answer key
I am going to go with yes. Imao
Acceleration due to gravity on the moon is greater / less than acceleration due to gravity on Earth. The mass of an object on the moon is less than / greater than / the same as it is on Earth. Using the equation F = ma to calculate weight, the mass of an object is multiplied / divided by acceleration due to gravity. So, the weight of an object on the moon is greater / less than the weight of the same object on Earth.
Answers
Why is no chemical reaction necessary to extract gold?
Answers
Explanation:
Because gold is a very unreactive metal and exists as a pure substance (instead of oxides).
The number of protons and neutrons combined in an atom of a particular element
Answers
Your mother gives you 250 mg of acetaminophen and a cup containing 500 ml of water. What is the concentration of the solution if you dissolve the Tylenol in the water?
Answers
Answer:
The concentration is 50%
Explanation:
Mass-Volume concentration is molarity (M) times 100% or [tex]\frac{Gsolute}{Lsoln}[/tex] * 100%
For this problem, we need to convert from milligrams to grams and milliliters to liters in order to plug the values into the equation and solve for the concentration.
So, 250 mg = 0.025g (there are 1000 mg in 1 g)
And 500ml = 0.05 L (there are 1000 ml in 1 L)
Now we can solve for the concentration
[tex]\frac{0.025 g}{0.05 L}[/tex] [tex]* 100[/tex] %= 0.5 [tex]* 100[/tex] % = 50% of Tylenol concentration
The movement of an object toward earth Soley because of gravity is called
Answers
Answer:constant acceleration. A steady change in velocity.
Explanation:
A student measures the time it takes for two reactions to be completed.
Reaction A is completed in 12 seconds, and reaction B is completed in 21
seconds. What can you conclude about the rates of these reactions?
A. The rates of reactions A and B are equal.
B. The rate of reaction A is lower.
C. The rate of reaction B is lower.
Answers
Answer:
c
Explanation:
because the left side of reactant is take more time to make a product than the first
The rate of these reactions should be considered as the option b. The rate of reaction A is lower.
Conclusion of the rate of reactions:Since Reaction A is completed in 12 seconds, and reaction B is completed in 21 seconds.
So based on this, we can say that the rate of reaction A should be lower as it contain 12 seconds as compared to reaction b.
hence, the option b is correct.
Learn more about reaction here: https://brainly.com/question/4241156
5. (03.01 LC)
Which of the following is matter in its liquid form?(2 points)
Animals
Plants
Rain
Sunlight
Answers
Answer:
rain
Explanation:
rain drops are water and water us a liquid
Two electrons in the 1s orbital must have different spin quantum numbers to satisfy
Hund's Rule
The Magnetic Rule
The Pauli Exclusion Principle
The Aufbau Principle
Answers
Answer: The Pauli Exclusion Principle
Explanation:
The electrons are filled in orbitals of equal energy with one electron entering each orbital until all the orbitals contain one electron with the same spin. The pairing of electrons take place thereafter.
The first electron in an orbital could have +1/2 spin or -1/2 spin. All of the electrons in singly occupied orbitals have the same spin so as to maximize total spin. which is given by Hunds rule.
Two electrons must have opposite spin and thus different spin quantum numbers is given by Pauli's exclusion principle.
find the mass in 3.8 moles of magnesium chloride
Answers
Explanation:
34.31+35.45(2)=
27.31+70.90=
95.21g/mol
The energy levels of an atom are occupied by
A.electrons
B.protons
C.neutrons
D.ions
Answers
Answer:
A: electrons
Explanation:
Geologists obtain indirect evidence about Earth’s interior by
a.
measuring pressure differences at Earth’s surface.
b.
estimating temperature inside earth.
c.
directly looking under the many layers.
d.
recording and studying seismic waves.
Answers
Answer:
I'm sure it's D.
Explanation:
They obtain evidences by recording and studying seismic waves.
Ammonification is the formation of
Answers
How could sinking a ship to create an artificial reef address the problem?
A.
More divers would come to the area to explore both reefs.
B.
Many divers would go to the artificial reef instead of the natural reef.
C.
There would be more places for new species to enter the ecosystem.
D.
There would be fewer places for marine organisms to live.
Answers
Answer:
C. There would be more places for new species to enter the ecosystem.
Explanation:
The Shipwrecks established artificial reefs that address the problem of a natural reef.
The artificial reefs provide a stable growing area for corals, and habitat for fishes and new organisms along with food sources that is found in natural reefs. This helps to increase the growth of marine life.
Hence, the correct answer is "C. There would be more places for new species to enter the ecosystem."
Define compound in your own words
Answers
Answer:
I think the compound is a chemical bound the compound o cant say I trying
Explanation:
oh the compound is a chemical substance like atoms like H2O and other atoms they have many compounds I think this should be ans
if its ans is too long you want then tell me in comment
If an atom has a mass number of 52 and has 28 neutrons, what is the atomic number?
Answers
Answer:
24
Explanation:
52-28=24
This is actually fun. First comment is brainliest.
Answers
Answer:
sup, how ya doin?
Explanation:
A heat lamp heats a pot of water from below, heat is
transferred throughout the water in the pot, and a person puts
their hand into the water to warm it. Which of the following
types of heat transfer are occurring in this scenario?
a Conduction
b Radiation
C Convection
d All of the above
Answers
Answer:
i think it is D. All of the above
but i will check to see if it's right
Answer:
D all of the above
Explanation:
I got it right on my test
You all should know that...
you guys are amazing
I just wanted you to know that
that's it
you can stop reading
why are you still reading?
I said that was it so why are you reading
stop reading
I said stop!
ok fine
well if your gonna keep reading you might as well hear this
jk im not writing anymore
that was all it was
JK AGAIN!
you are all...
wonderful
smart
beautiful (inside and out)
loved
and cared for
so don't go
you gotta be here
you gotta be here to spread your amazingness
because you are a queen/king
Answers
Answer:
Thank you I needed this
you are...
wonderful
smart
beautiful (inside and out)
loved
and cared for
so don't go
you gotta be here
you gotta be here to spread your amazingness
because you are a queen/king
YES YOU ARE and SO IS EVERYONE ELSE, I HOPE YALL ALL STAY SAFE AND HAVE A GREAT DAY >-<
How do you convert a temperature from Celsius to kelvin?
Answers
Explanation:
by adding 273.15K to the given value of temperature in Celsius degree.
example:
20℃ to Kelvin
[tex]T(K)=20℃+273.15K \\
=293.15K [/tex]