Physics, asked by alpha5985, 10 hours ago

One element X has atomic number 20 and mass number 40 find the number of electrons.

O 20
O 40
O 22

Answers

Answered by prabhushree2014

0

Answer:

the answer is O 20

hope its helpful

Answered by lekhpreetmaan

0

Answer:20

Explanation: Number of protons = Number of electrons

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