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What is the electron configuration for bromine? a) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4...

What is the electron configuration for bromine?
a) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
b) 1s2 2s2 2p6 3s2 3p6 4d10 4s1 4p6
c) 1s2 2s2 2p6 3s2 3p6 4d10 4s2 4p5
d) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5
e) 1s2 2s2 2p6 3s2 3p6 3d10 4s14 p6

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Answer #1

Bromine atomic number 35. its outermost electinic configuration is 4s2 4p5. the electonic configuration of bromine is

d) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5

Electrons are arranged in different shells around the nucleus. The innermost shell - or lowest energy level - is filled first. Each succeeding shell can only hold a certain number of electrons before it becomes full.

Lowest energy orbitals fill first. Thus, the filling pattern is 1s, 2s, 2p, 3s, 3p, 4s, 3d,4p etc

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