How many electrons does a hydrogen molecule have in its K shell? - Science MCQ Prepp 2026 | ExamTest.live | ExamTest.live

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How many electrons does a hydrogen molecule have in its K shell?

A $4$
B $2$
C $1$
D $3$

Solution & Step-by-step Explanation

A single hydrogen atom has 1 electron in its K shell (1s orbital). A hydrogen molecule (H_{2}) is formed when two hydrogen atoms share their single electrons through a covalent bond to complete their duplet configuration. Therefore, the hydrogen molecule contains a total of 2 electrons in its K shell.

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How many electrons does a hydrogen molecule have in its K shell?

A

4

B

2

C

1

D

3

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Chemistry Atomic Structure Hydrogen

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