Trend in Electron Affinity

Q.

Which one of the following is the most electropositive element?

1. Magnesium

2. Sodium

3. Silicon

4. Aluminium

Q.

Which of the following set has the strongest tendency to form anions

1. N, O and F

2. Ga, In and Te

3. Na, Mg and Al

4. V, Cr and Mn

Q. Which one of the following statements is incorrect?

1. Greater the nuclear charge, more negative is the electron gain enthalpy
2. Nitrogen has positive electron gain enthalpy
3. Electron gain enthalpy decreases from fluorine to iodine in the group
4. Chlorine has highest electron gain enthalpy with negative sign

Q.

Nitrogen has lower electron affinity than its preceeding element carbon because

1. Electron affinity decreases along a period

2. Electron affinity generally increases along a period

3. Nitrogen atom has half filled p-orbital

4. Nitrogen is a p-block element

Q.

We have the number of outer shell valence electrons of 4 atoms. Which among them will have the least electron affinity?
Atom 1: 7
Atom 2: 2
Atom 3: 6
Atom 4: 3

1. ns2np2

2. ns2np3

3. ns2np5

4. ns2np4

Q.

Which of the following elements has the maximum electron affinity?

1. I
2. Br
3. Cl

4. F

Q.

The electron affinity of Be is almost similar to that of?

1. Li

2. B

3. Na

4. Ne

Q.

The element having very high ionization enthalpy but zero electron gain enthalpy is

1. H

2. He

3. F

4. Be

Q.

Which of the following arrangement for the three halogens Cl, Br and I when placed in the order of their increasing electron afinity is correct?

1. Cl, Br, I

2. I, Br, Cl

3. Br, Cl, I

4. I, Cl, Br

Q.

Which of the following has highest electron affinity?

1. Cl

2. F

3. N

4. O