Science, asked by anushkasaini3310, 5 months ago

an certain particle X has 17 protons 17 electrons and 18 neutrons what is the mass number And vacancy of X

Answers

Answered by manjumanhas555

4

Answer:

L M. (a) Valency = 8-7 = 1 [∵2, 8, 7] Atom needs 8 electrons to get stable. (b) Mass number = Number of protons + Number of neutrons =17 + 18 =35.

Missing: vacancy ‎| Must include: vacancy

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