Trend in Electronegativity

Q.

In general, electronegativity ___ going left to right across a row in the periodic table.

Q.

What is the correct order of electronegativity?

1. $M^{1-}$ < $M^{2-}$ < $M^{3-}$ < $M^{4-}$

2. $M^{1-}$ > $M^{2-}$ > $M^{3-}$ > $M^{4-}$

3. $M^{1-}$ < $M^{2-}$ < $M^{3-}$ < $M^{4-}$

4. $M^{4-}$ < $M^{2-}$ < $M^{3-}$ < $M^{1-}$

Q.

If the ionization enthalpy and electron gain enthalpy of an element are 275 Kcal/mole and 86 Kcal ${mol}^{-1}$ respectively, then the electro negativity of the element on mulliken scale is

1. 2.8

2. 0.0

3. 4.0

4. 2.6

Q.

The electronegativity of the following elements increases in the order of?

1. B < N < C < O < F

2. B < C < O < N < F

3. B < C < N < O < F

4. F < O < N < C < B

Q.

Which of the following elements represent highly electro positive as well as highly electro negative element in its period?

1. Hydrogen

2. Fluorine

3. None

4. Nitrogen

Q.

In C, N, O and F the electronegativity

1. Decreases from carbon to fluorine

2. Increases from carbon to fluorine

3. Increases from carbon to oxygen and then decreases

4. Decreases from carbon to oxygen and then increases

Q.

An atom with high electron affinity generally has

1. Tendency to form positive ions

2. High ionisation energy

3. Large atomic size

4. Low electronegativity

Q.

Arrange F, Cl, O, and N in the decreasing order of electronegativity.

1. F > N > Cl > O

2. Cl > F > N > O

3. F > O > N > Cl

4. O > F > N > Cl

Q.

Fluorine has the highest electronegativity among the $n{s}^{2}n{p}^5$ group on the Pauling scale, but the electron affinity of fluorine is less than that of chlorine because-

1. The atomic number of fluorine is less than that of chlorine.

2. Fluorine being the first member of the family behaves in an unusual manner.

3. Chlorine can accommodate an electron better than fluorine by utilizing its vacant 3d=orbital.

4. Small size, high electron density and an increased electron repulsion makes addition of an electron to fluorine less favourable than that in the case of chlorine.

Q. Which of the following halogens doesn't exhibit positive oxidation state in its compounds?

1. Cl

2. Br

3. I

4. F