an element has atomic no.17 to which groupand period does it belong
Answers
Answered by
1
Answer:
tthe element is chlorine
Explanation:
electronic configuration: 2,8,7
3 shells so period 3
7 valence electrons so group 17
Answered by
0
Explanation:
It belongs to group 17 as it ends with 7 valence electrons
it belongs to 3rd period as it has 3 outer shells.
element is chlorine Cl
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