Trend in Electron Affinity

Q. With respect to periodic properties, the correct statement is:

1. The order of electron affinities is $F>O>Cl$
2. The order of first ionisation energies is $Al>Mg>K$
3. The order of atomic radii is $N>P>As$
4. The order of ionic radii is $K^{+}>C{a}^{2+}>M{g}^{2+}$

Q. Choose the correct order of negative electron gain enthalpy.

1. Cl < K < Br < Ca
2. Cl < Br < K < Ca
3. K < Ca < Br < Cl
4. Ca < K < Br < Cl

Q. Which one of the following is an incorrect statement?

1. The ionisation potential of nitrogen is greater than that of chlorine
2. The electron affinity of fluorine is greater than that of chlorine
3. The ionisation potential of beryllium is greater than that of boron
4. The electronegativity of fluorine is greater than that of chlorine

Q.

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

1. Li

2. B

3. Na

4. Ne

Q.

Which of the following configurations will have the least electron affinity?

1. $n{s}^{2}n{p}^5$

2. $n{s}^{2}n{p}^2$

3. $n{s}^{2}n{p}^3$

4. $n{s}^{2}n{p}^4$

Q.

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

1. H

2. F

3. He

4. Be

Q.

Which of the following elements has the maximum electron affinity?

1. I

2. Br

3. Cl

4. F

Q.

Which of the following has highest electron affinity?

1. F

2. Cl

3. N

4. O

Q. The correct order of the $1^{st}$ electron affinities of $N,O,F,S$ and $Cl$ is:

1. $N<S<O<Cl<F$
2. $Cl<S<N<O<F$
3. $N<O<S<F<Cl$
4. $S<Cl<N<O<F$

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