1. Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atoms of which element will have the least attraction for an electron?
A) Be.
B) Mg.
C) Ca.
D) Sr.

2. Which element has a larger atomic radius than sulfur?
A) Chlorine.
B) Cadmium.
C) Fluorine.
D) Oxygen.

3. Which ion was formed by providing the second ionization energy to remove an electron?
A) Ca2+.
B) N3–.
C) Fe3+.
D) S2–.

4. The most negative electron affinity is most likely associated with which type of atoms?
A) Large nonmetal atoms.
B) Small nonmetal atoms.
C) Large metal atoms.
D) Small metal atoms.

5. Selected properties of antimony (Sb) and iodine (I) are listed in the table below.

Element AtomRadius(pm) 1st IonEnergy(kJ/mol) ElectroAffinity(kJ/mol) Electronegative
Sb 145 ? –103 2.05
I 140 1008 –295 ?

Which predictions can most likely be made?
Sb has a lower ionization energy but a higher electronegativity than I.
Sb has a higher ionization energy but a lower electronegativity than I.
Sb has a lower ionization energy and a lower electronegativity than I.
Sb has a higher ionization energy and a higher electronegativity than I.

6. Which correctly summarizes the trend in electron affinity?
A) It tends to be very high for group 2.
B) It tends to be more negative across a period.
C) It tends to remain the same across periods.
D) It tends to be more negative down a group.

7. Which explains the change in ionization energy that occurs between removing the first and second electrons from an atom?
A) The ionization energy decreases because the ratio of the protons to electrons increases.
B) The ionization energy increases because the ratio of the protons to electrons increases.
C) The ionization energy decreases because the ratio of the protons to electrons decreases.
D) The ionization energy increases because the ratio of the protons to electrons decreases.

8. Which element would most likely have an electron affinity measuring closest to zero?
A) Na.
B) Al.
C) Rb.
D) Ar.

9. Electronegativities of the elements Na, Al, P, and Cl follow a specific trend across the period. Based on this trend, an electron will be most strongly attracted to
A) Na.
B) Al.
C) P.
D) Cl.

10. Which best describes ionization energy?
A) Energy needed to add an electron to a neutral atom in the gas phase.
B) Energy needed to add an electron to a neutral atom in the liquid phase.
C) Energy needed to remove an electron from an atom or ion in the gas phase.
D) Energy needed to remove an electron from an atom or ion in the liquid phase.

Answer: B D B A C B E D A B

Explanation:

How does salinity vary with freezing and melting?









Question 3 options:

Freezing increases salinity, while melting decreases salinity.


Both freezing and melting decrease salinity.


Freezing decreases salinity, while melting increases salinity.


Both freezing and melting increase salinity.

What is the overall reaction equation

PLs help mweee Ill mark brainliest

which statement describes the movement of carbon dioxide in the carbon cycle?

What is the mass, in grams, of MgCl2 is consumed when 255g Mg(OH)2 is produced?

MgCl2 + 2 LiOH → Mg(OH)2 + 2 LiCl

9 of 16
9.
A student drops a ball from 5 feet above the ground. After bouncing once, it only reaches
a maximum height of 4 feet above the ground.
Use energy terms to explain why the ball did not reach its original height after bouncing
once.
A. Some energy was lost
B. Some energy was transferred to the floor and air
C. Some energy disappeared when it hit the floor
D. Some energy was destroyed

This is for my wonderful boy friend Putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
Never put my love out on the line
Never said "Yes" to the right guy
Never had trouble getting what I want
But when it comes to you, I'm never good enough
When I don't care, I can play 'em like a Ken doll
Won't wash my hair, then make 'em bounce like a basketball
But you make me wanna act like a girl
Paint my nails and wear high heels, yes, you
Make me so nervous that I just can't hold your hand
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
Never break a sweat for the other guys
When you come around, I get paralyzed
And every time I try to be myself
It comes out wrong like a cry for help
It's just not fair; pain's more trouble than love is worth
I gasp for air; it feels so good, but you know it hurts
But you make me wanna act like a girl
Paint my nails and wear perfume for you
Make me so nervous that I just can't hold your hand
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack
The feelings got lost in my lungs
They're burning I'd rather be numb
And there's no one else to blame
So scared I take off, and I run
I'm flying too close to the sun
And I burst into fla-fla-flames
You make me glow
But I cover up, won't let it show
So I'm putting my defenses up
'Cause I don't wanna fall in love
If I ever did that, I think I'd have a heart attack
I think I'd have a heart attack (Heart attack)
I think I'd have a heart attack
I think I'd have a heart attack
I think I'd have a heart attack

A sample of gas at 2.00 atm has a temperature of 60. °C. What will its temperature be at 6.50 atm

An atom has 9 protons and 7 electrons. What is its overall charge?

what does aqueous mean

If the density is 0.9g/cm3 and the volume is 1.5cm3 ? What is the Mass?

A process that releases heat, such as freezing or condensation is called?

Pls do it I don’t understand

lil give brainly 20 points

How many atoms are in 70.00 grams of oxygen.

Question 2 options:

2.635 x 1024 molecules O


2.635 x 1024 atoms O


6.744 x 10 23 atoms O


6.744 x 1026 atoms O

If on December 1st there is a new moon, when will the next new moon be approximately?

December 14th

December 5th

January 5th

December 29th

Which of the following operations usually makes a substance dissolve faster
in a solvent (select ALL that apply)?
A.raising the temperature
B.lowering the temperature
C.agitation
D.crushing the substance to a powder

Which of the following materials has the highest density?
A. O water vapor
B. O steam
C. O liquid water
D. O ice

What is the yearly exposure from wearing a watch with a luminous dial?

According to kelper, which planet travels the fastest.
1. Earth
2. Jupiter
3. Mercury
4. Neptune

What does the cardiovascular system do
for the human body?

Question 7 (5 points)
(05.01 LC)
One mole of zinc has a mass of 65.4 grams. Approximately how many atoms of zinc are present in one mole of zinc?

Find the mass of 1.25 moles Ca(OH)2.​

Distance=100 meters
Time=33.2 seconds
Speed=
pls help

i need help please this is due today

PLS HELP I WILL GIVE BRAINLIST.

Mercury has a density of 13.6 g/cm³. Which of these materials will float in mercury? Check all that apply.

iron, density: 7.8 g/cm³
aluminum, density: 2.7 g/cm³
silver, density: 10.5 g/cm³
gold, density: 19.3 g/cm³
uranium, density: 18.7 g/cm³
lead, density: 11.3 g/cm³

Can somebody help me with this math.

Which of the following is a problem caused by acid rain?
1 -is a factor in global warming
2-causes depletion of the ozone layer
3-respiratory problems in humans
4-makes lakes and streams unsuitable aquatic life

1. If a cell has waste it needs to store, it will store it:​

Atoms of which two elements have a combined total of 23 protons?
A.Sodium, Na, and magnesium, Mg
B.Boron, B, and carbon, C
C.Copper, Cu, and zinc, Zn
D.None of these