Question

What is the valency of atomic number 42?? And how?​

Answer 1

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➡Molybdenum is the element with atomic number 42 and is having electronic configuration [Kr]5s14d5, where atomic no. of Kr = 36. Thus no. of valence electrons is 1, which is no of an electron in 5s subshell.

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Answer 2

Answer:

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Explanation:

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