Q16 of 68 Page 39

The molecular formula of the compound formed from B and C will be

The atom B requires 3 electrons to complete its octet whereas C atom requires only 1 electron.

Thus, 3 atoms of C will combine with a B atom to get a stable electronic configuration.

The compound will be BC₃.

The electronic configurations of three elements, A, B and C are given below. Answer the questions 14 to 17 on the basis of these configurations.

A 1s² 2s² 2p⁶

B 1s² 2s² 2p⁶ 3s² 3p³

C 1s² 2s² 2p⁶ 3s² 3p⁵

Stable form of A may be represented by the formula :

Stable form of C may be represented by the formula :

The bond between B and C will be

Which of the following order of energies of molecular orbitals of N2 is correct?