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Electron Configuration : Class 9 Science MCQ Practice Questions & Answers (Tamil) - ObjectiveMcq

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HomePracticeClass 9 ScienceChemistryAtomic StructureElectron Configuration

Electron Configuration in Class 9 Science : Practice MCQ Questions & Answers with Explanations

1 practice sets · Page 1 of 1

Class 9 ScienceMediumChemistry Atomic StructureElectron Configuration

1.

The electron configuration of sodium (Na) is 2, 8, 1. What is the number of electrons in the outermost shell of sodium?

A

10

B

2

C

1

D

8

View Answer

Correct Answer: C — 1

Explanation:

Sodium has one electron in its outermost shell.