Question

What is the number of valence electrons in the chlorine atom?

Answer 1

Answer:

7

Explanation:

plz refer image

Answer 2

AnSwEr:–

$\bullet{\textsf{No. of valence electrons in the chlorine atom is 7}}$

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SteP By SteP ExplainaTion:–

The outermost shell electrons in an atom are called valence electrons. It has atomic number of 17. The electronic configuration of Chlorine is 2,8,7. In K shell there are 2 electrons , in L shell 8 electrons and in M shell which is the outermost shell or valence shell there are 7 electrons.

According to Formal electronic configuration of Chlorine

1s²2s²2p63s²3p5 here the electron in s block is 2 and p block id 5. so the total number of valence electrons is

2+5 = 7.

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More about Chlorine:–

• Valency of chlorine is 1 (It needs one Electron to complete it's octet or to acquire stability.

• The atomic mass of chlorine is 35.5 u.

• Chlorine is non-metal belongs to halogen group.

• Oxidation number of chlorine is -1.

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