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UHHH helpppp maya cause uh she d.a.n.g d.u.m.b.
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UHHH helpppp maya cause uh she d.a.n.g d.u.m.b.

UHHH helpppp maya cause uh she d.a.n.g d.u.m.b.-example-1
User Ontherocks
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6 votes
It’s ...............17
User Thinh Tran
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5 votes

Answer:

17

Step-by-step explanation:

the mass number of the element which is protons and neutrons is 17+18=35

electronic configuration is 2, 8, 7

valency of the element is 1 therefore the atomic number is 17

User Enrico Pirani
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