Question

Choose the correct option from the following.

(a) A group gets priority if its atomic number is high

(b) When atoms attached to a double bond have same atomic number, the first atoms are considered

(c) A group gets priority if its atomic number is low

(d) Lone pair gets more priority and is ranked above hydrogen

The question was asked in an online quiz.

My question is taken from E and Z Nomenclature of Geometric Isomers in division Structure and Stereostructure of Molecules of Engineering Chemistry I

Answer 1

Correct choice is (a) A group gets priority if its atomic number is high

To explain I would say: A group gets priority if its atomic number is high and When atoms attached to a double bond have same atomic number, the second atoms are considered.