How many of the following elements can form compounds with an expanded octet?
I O Cl Xe
A)2
B)0
C)3
D)1
E)4

Question

Quizplus · Accepted Answer

Only elements in the third row or below of the periodic table can form compounds with an expanded octet, due to the availability of their empty d orbitals. Among the given options, Chlorine, Oxygen, and Xenon are in the third row or below and can form compounds with an expanded octet, while Fluorine cannot. Therefore, the correct answer is C)3.

How Many of the Following Elements Can Form Compounds with an Expanded