Science, asked by jegadesanhari, 4 months ago

calculate the atomic number of an element whose mass number is 39and the neutrons is 20 .also find the name of the element​

Answers

Answered by skgamingsarthak2000
6

no of neutron =mass no- atomic no

20=39-x

x=39-20

x=19

element is potassium

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