What is the mass number of an element having 20 neutrons, 15 protons and 15 electrons?

By: |Published on: May 11|Categories: Chemistry WAEC| 0 comments

A. 15
B. 30
C. 35
D. 50

Correct Answer: Option C

C. 35

Explanation

Mass number = Protons = Neutrons = 15 + 20 = 35

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