an element a has atomic number 7 it has similar chemical properties of atomic number a.9 b.17 c.15
Answers
Answered by
1
Answer:
Tha answer should be 15
Answered by
2
Answer:
15
Explanation:
because 7 is the atomic no. of nitrogen(N) and 15 is the atomic no. of phosphorus(P). which are comes in same group....group 15
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