Electron Configuration Identification

00:00 1 marks

Which species has the electron configuration $1s^2 2s^2 2p^6 3s^2 3p^6$?
I. Ar
II. K⁺
III. Cl⁻

A

I and II only
B

I and III only
C

II and III only
D

I, II and III

Hint Hint

Hint

Calculate the total electrons for each species and compare to 18

Answer Answer
Mark Scheme Mark Scheme
Explanation Explanation
Examiner Tips Examiner Tips
Common Errors Common Errors
Real World Context Real World Context

Answer Answer

Complete Answer

I, II and III

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

Examiner Tips Examiner Tips

Common Errors Common Errors

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