Which of the following has 5s2 outermost electronic configuration ?
Ca
Mg
Sr
Ba
As we learnt ,
Electronoc configuration of strontium -
Therefore, option(3) is correct.
NEET 2026 LIVE: NTA application correction window closes today; admit card, exam dates, pattern
NEET 2026 registration deadline extended to March 11 for MBBS, BDS; exam on May 3
NEET 2026 Registration LIVE: NTA extends MBBS, BDS application deadline to March 11; how to apply
Create Your Account
To keep connected with us please login with your personal information by phone
Dont't have an account? Register Now