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Which option correctly describes the pattern of valence electrons on the periodic table?(1 point)

Responses

The number of valence electrons increases from left to right.
The number of valence electrons increases from left to right.

The number of valence electrons increases from top to bottom.
The number of valence electrons increases from top to bottom.

The number of valence electrons increases from right to left.
The number of valence electrons increases from right to left.

The number of valence electrons increases from bottom to top.

1 answer

The correct option is:

The number of valence electrons increases from left to right.

In the periodic table, as you move from left to right across a period, the number of valence electrons in the elements increases. For example, the elements in Group 1 (alkali metals) have 1 valence electron, while the elements in Group 2 (alkaline earth metals) have 2 valence electrons, and so on, with Group 18 (noble gases) having 8 valence electrons (except for helium, which has 2).