A certain atom has 26 protons, 26 electrons, and 30 neutrons. What is its mass number?

1 Answer
anor277
Jan 28, 2017

Its #"mass number"# is #56#.

Explanation:

Mass number is simply the total number of massive particles in the atom, protons and neutrons. There are 26 protons, and 30 neutrons, and thus its #"mass number"# #=# #56*"amu"#.

What is the element that is so described? And how do you represent this isotope?

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