Question

the atomic number Z of an atom represensts
A.number of protons
B.number of electrons and protons
C.number of neutromd
D.sum of protons and nuetrons​

Answer 1

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The mass number of an atom is equal to the number of protons plus the number of neutrons that it contains. In other words, the number of neutrons in any atom is its mass number minus its atomic number. Number of neutrons = mass number - atomic number. or. Mass number = number of protons + number of neutrons.