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disa [49]
3 years ago
5

Which number indicates the energy level of an atoms valence electrons

Chemistry
1 answer:
Arisa [49]3 years ago
8 0
Period number
Hope this helps!!
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The particles of light known as photon.

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Answer:

Noble gas Electronic configuration of arsenic:

As₃₃ = [Ar] 3d¹⁰ 4s² 4p³

Explanation:

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Its atomic mass is 75 amu.

Its symbol is As.

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As₃₃ = Is² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p³

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