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Chemistry, 18.10.2021 17:30 Xaviiier

An atom with 3 protons and 4 neutrons will have a valency of
(1) 3 (2) 7 (3) 1 (4) 4

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An atom with 3 protons and 4 neutrons will have a valency of
(1) 3 (2) 7 (3) 1 (4) 4...

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