Question

Which of the following statement is incorrect ?

• A. The tendency to attract bonded pair of electron in case of hybrid orbitals follow the order :sp>sp2 >sp3
• B. Alkali metals generally have negative value of electron gain enthalpy.
• C. Cs+(g) releases more energy upon gain of an electron than Cl(g).
• D. The electronegativity values for 2p-series elements is less than that for 3p-series elements on account of small size and high inter electronic repulsions.

Answer 1

Answer: (D)

The electronegativity values for 2p-series elements is less than that for 3p-series elements on account of small size and high inter electronic repulsions.

Answer 2

The tendency to attract bonded pair of electron in case of hybrid orbitals increases with increase in % s-character and so the order : sp > sp2 > sp3

The electron affinity values for 2p-series elements is less than that for 3p-series elements on account of small size and high inter electronic repulsions. Statements (2) and (3) are facts. Every cation releases more energy than neutral atom upon gain of an electrons.