Which one of the following sets of ions represents a collection of isoelectronic species? - Chemistry MCQ AIEEE 2006 2026 | ExamTest.live | ExamTest.live

Home Tests Search Rank Profile

easyMCQAIEEE 20062026Chemistry

1 attempts0% success rate1 mark

Which one of the following sets of ions represents a collection of isoelectronic species?

A $K^{+}, Ca^{2 +}, Sc^{3 +}, Cl^{-}$
B $Na^{+}, Mg^{2 +}, Al^{3 +}, Cl^{-}$
C $K^{+}, Cl^{-}, Mg^{2 +}, Sc^{3 +}$
D $Na^{+}, Ca^{2 +}, Sc^{3 +}, F^{-}$

Solution & Step-by-step Explanation

Isoelectronic species have the same number of electrons.For K^{+}, Ca^{2 +}, Sc^{3 +}, Cl^{-} : K^{+} : 19 - 1 = 18 electrons. Ca^{2 +} : 20 - 2 = 18 electrons. Sc^{3 +} : 21 - 3 = 18 electrons. Cl^{-} : 17 + 1 = 18 electrons. This set is isoelectronic.

Practice this question

Try it yourself before checking the explanation above.

Which one of the following sets of ions represents a collection of isoelectronic species?

A

K^{+}, Ca^{2 +}, Sc^{3 +}, Cl^{-}

B

Na^{+}, Mg^{2 +}, Al^{3 +}, Cl^{-}

C

K^{+}, Cl^{-}, Mg^{2 +}, Sc^{3 +}

D

Na^{+}, Ca^{2 +}, Sc^{3 +}, F^{-}

Share This Question

Physical Chemistry Periodic Properties

Related Questions

Which one of the following statements is true?

Which of the following statements is not correct?

Which one of the following statements is correct?

The product formed by the reaction of an aldehyde with a primary amine is:

Which part of the tobacco plant is infected by Meloidogyne incognita?

The term ecosystem was coined by:

Ready for a Full Test?

Practice with timed mock tests and track your performance across Chemistry.

Browse Tests Leaderboard

Discussion