Question

On the basis of following features identify the correct option.
I. This element exist in gaseous state at room temperature.
II. This element has germicidal properties.
III. This element has 7 electrons in valence shell.

• A. Iodine
• B. Chlorine
• C. Both (A) and (B)
• D. Neither (A) nor (B)

Answer 1

The correct option is B Chlorine

This element exist in gaseous state at room temperature is chlorine neither iodine because it exist in solid form at room temperature.
Chlorine has germicidal properties but Iodine is toxic.
Atomic no. of chlorine is 17 : 2, 8, 7
Atomic no. of Iodine is 53 : 2, 2 , 6, 2, 6, 10, 2 , 6 , 10, 7
Thus Option B is correct.