a
group number
b
Shell number
c
period number
d
atomic mass
Explanation
Correct Option
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fayemirachealaanuoluwapo
2 months ago
The correct answer is option A
group number.....
The group number
In the periodic table, valence electrons are indicated by the group number (for main group elements).
For example an element with atomic number 14 has 4 valence electron(2,8,4) the last digit represents thea valence number andof the numbers represents it belongs to group 4 period 3
