Statement (A) : Modern periodic table contains 7 periods.
Statement (B) : Modern periodic table contains 18 groups.
Statement (C) : Second period contains 8 elements.

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

A and B are incorrect but c is correct.

A and B are correct but c is incorrect.

All the above statements are correct

All the above statements are incorrect

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

In the modern periodic table there are 7 horizontal rows and 18 vertical columns are present. Horizontal rows are called periods, Vertical columns are called groups. In the 2^nd period 8 elements are present, those are

Li, Be, B, C, N, O, F and Ne.

Watch 3-min video & get full concept clarity

Result Producing online coaching for JEE/NEET of south India

Largest All India Test Series for JEE/NEET

Best Books for IIT JEE

Best Books for NEET

How to Join IIT after 10th

Get Expert Academic Guidance – Connect with a Counselor Today!