Write the complete electron configuration for the magnesium atom.

Question

Question

8A 1A H 2A 3A 4A 5A 6A 7A He Li Be B CNO F Ne S CI Ar Na Mg 38 4B 5B 6B 7B 1B 2B ASi P 88 K Ca Sc Ti VCr Mn Fe Co Ni Cu zn Ga

Using NOBLE GAS notation write the electron configuration for the chlorine atom.

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Answer 1

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Answer #1

1)

Number of electron in Mg = 12

Electronic configuration is 1s2 2s2 2p6 3s2

Answer: 1s2 2s2 2p6 3s2

2)

Number of electron in Cl = 17

Electronic configuration is 1s2 2s2 2p6 3s2 3p5

Noble gas having lesser electron than Cl and closest to it is Neon (Ne)

Number of electron in Ne = 10

electronic configuration of Ne is: 1s2 2s2 2p6

So, electronic configuration of Cl in noble gas form is: [Ne] 3s2 3p5

Answer: [Ne] 3s2 3p5

Answer 2

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​Write the complete electron configuration for the magnesium atom.