Question

12 Which of the following elements belongs to same period
A]Li,F B]Na,F C]O,F D]Be,O​

Answer 1

Answer:

bhai iska ans h

Explanation:

ANSWER

Li,Be,B,C,O,F,Ne belongs to second period. Nitrogen is the missing elements.

Nitrogen should be placedbetween carbon and oxygen

* Carbon atoms shows catenation properly.

* F>N>Be in terms of electronegativity.

Answer 2

Answer:

A), C) and D) belongs to the same period.