Chemistry, asked by nneilbincy, 6 hours ago

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

Answers

Answered by sakshamagrawal610

1

Answer:

19

Explanation:

Answered by somarajanunnithan

0

answer : atomic number=19

Explanation:

Given mass number = number of proton + number if neutron =39

number of neutron =20

therefore atomic number = mass number - number of neutron

atomic number=39-20=19

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