Chemistry, asked by alex4451, 4 months ago

Atomic number of an element is 20. It has _________ valence electron.

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Answered by namaniyashaswini

Answer:

Explanation:

Atomic number of calcium is 20 and its electronic ... As it contains only 2 valence electrons this means that it belongs to group ... How many elements are there in Na2co3.

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Answered by Angelinapereppaden3

20 is the element number of calcium

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Atomic number of an element is 20. It has _________ valence electron.​

Answers

Atomic number of an element is 20. It has _________ valence electron.