Question

211. Which electron level would allow the hydrogen atom to absorb a photon and not to release it?
b. 2s
1s
c. 3s
d. 4s

Answer 1

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Its simple That the E.C of the hydrogen it just 1s¹

it means it can have only one energy shell in which it acquire electron to complete its duplet .
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So answer is a) is correct 1s 

because s subshell is near to the nucleus and have high shielding effect .
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Answer 2

Explanation:

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the above answer is correct mark it as brainliest