What is the mass number of an element if its atom contains 10 protons, 10 electrons and 12 neutrons?

Assessment: WAEC SSCE - Chemistry - 2000 (Objective) Subject: Chemistry

Question 1 Report

What is the mass number of an element if its atom contains 10 protons, 10 electrons and 12 neutrons?
Answer Details
The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom. Given that the atom of the element has 10 protons and 12 neutrons, the mass number of the element would be: Mass number = Number of protons + Number of neutrons Mass number = 10 + 12 Mass number = 22 Therefore, the answer is: 22.
Read lesson note on Atomic Structure And Bonding (JAMB)
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