Question

b. What number of the electrons are present in the outermost orbit of Na and F ?
c: why does the chemical element of group VIInis most active in the periodic tabel ?

Answer 1

Answer:

idk

Explanation:

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Answer 2

Answer:

Na = 1  ,  F = 1

Explanation:

The elements in a group have similar physical or chemical characteristics of the outermost electron shells of their atoms (i.e., the same core charge), because most chemical properties are dominated by the orbital location of the outermost electron.