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Nostrana [21]
3 years ago
9

According to the periodic table, how many electrons does gallium (#31) have in its valence level?

Chemistry
2 answers:
mojhsa [17]3 years ago
3 0
It would have three valance electrons
Mariana [72]3 years ago
3 0

Option A: 3

The atomic number of gallium atom is 31. It belongs to 13th group and 4th period of the periodic table.

The electronic configuration is as follows:

[Ar]3d^{10}4s^{2}4p^{1}

Here, Ar is the nearest noble gas.

The outermost electronic shells are 4s^{2}4p^{1}.

From the electronic configuration, valence electrons of  gallium are 3.


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