Which of the following pairs of 'elements - valency'

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Which of the following pairs of 'elements - valency' is correct?
I. Boron - 2
II. Fluorine - 3

[SSC CHSL 21st March 2023 Shift-4 With Answers]

A

Neither I nor II

B

Both I and II

C

Only II

D

Only I

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