Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Medical
  • Help me answer: The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?

The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?

  • Option 1)

    Ca2+ < K+ < Ar

  • Option 2)

    K+ < Ar < Ca2+

  • Option 3)

    Ar < K+ < Ca2+

  • Option 4)

    Ca2+ <Ar < K+

 

Answers (1)

best_answer

 

Size of isoelectronic species -

Smaller the value of  z/e, larger the size of that species.Smaller z means effective nuclear charge is small hence size is large.

-

 

 In case of isoelectronic species, radius decreases with increase in nuclear charge 


Option 1)

Ca2+ < K+ < Ar

Option is correct

Option 2)

K+ < Ar < Ca2+

Option is incorrect

Option 3)

Ar < K+ < Ca2+

Option is incorrect

Option 4)

Ca2+ <Ar < K+

Option is incorrect

Posted by

prateek

View full answer

NEET 2024 Most scoring concepts

    Just Study 32% of the NEET syllabus and Score up to 100% marks

Similar Questions

Trending Articles/News

anam-khan

NTA Overhaul: 1,000 secure exam centres, biometrics to prevent fraud, question paper changes, suggests panel
anam-khan

NEET syllabus 2025 out; NMC uploads subject-wise topics
anam-khan

What changes in NEET UG? Experts’ panel suggests multi-stage exam, security overhaul, simpler process to NTA

Latest Question