elements a. b c
mass no. 23. 20. 35
neutrons. 12. 10. 18
1)to which groups do abc belong
2)to which periods ABC belong
3)which is alkali,noble gas,halogen
Answers
Answered by
0
Answer:
35-HALOGEN,20-CALCIUM,23-VANADIUM
Explanation:
35-GROUP17
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