Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • BITSAT Which of the elements Na, Mg, Al and K has the highest second ionization energy?

  1. Na

  2. Mg

  3. Al

  4. K

Answers (1)

E.C. of all the elements.

1) Na = Ne 3s1

2) Mg = Ne 3s2

3) K = [Ar] 4s1

4) Al  = [Ne] 3s2 3p1

 

Now to compare second ionization energy the conf. will be

 

1) Na = Ne

2) Mg = Ne 3s1

3) K = [Ar]

4) Al  = [Ne] 3s2

 

Now Sodium and Potassium have achieved their stable conf. i.e noble gas conf. or now are fully filled and thus more stable than Mg and Al.

Now in K and Na,

Na will have highest second ionisation energy because, Neon is smaller than Argon considering difficult to ionize or remove electrons from Neon as compare to Argon

Option (1) is correct

Posted by

Abhishek Sahu

View full answer

Similar Questions

Trending Articles/News

anam-khan

BITSAT 2024 application correction facility begins tomorrow; editable fields
anam-khan

BITSAT 2024 registration window closes tomorrow; exam from May 20
anam-khan

BITSAT 2024 registration deadline extended till April 16; session 1 exam from May 19 to 24

Latest Question