Some of the elements of the third-period and periods below can have expanded octet because they have d- sub-level.
We have 2 possible answers. A and B. Because lodine and chlorine. Sulfur and phosphorous are in the 3d or lower periods.
In the compound P2S5, where P forms 5 bonds.
Iodine and chlorine do not have enough difference in electronegativity to form compound ICl7.
So, the answer is B.
64. option (B) is correct.
Lithium nitride has the molecular formula: . It consists of and ions.
Elements having energetically available vacant orbitals are likely to expand octet as they can accommodate more electrons in those vacant orbitals by forming bonds.
Both S and P have vacant energetically available 3p orbitals which make them prone to expand their octet.
So, option (B) is correct.