kimmmm1024 kimmmm1024

17-09-2020
Chemistry

contestada

For an isotope of argon (Z = 18), the mass number is 40. The number of neutrons in this isotope is -

a 22
b 18
c 40
d 58

Respuesta :

queenbee200317 queenbee200317

23-09-2020

the answer is A. 22 ,because A=40 and A-z = 22

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