GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom
A
element name
B
element symbol
C
atomic number
D
atomic mass
Explanation: 

Detailed explanation-1: -Add the mass of protons and neutrons to calculate the atomic mass of a single atom of an element. The number of protons and the number of neutrons together determine the mass number of an element: mass amount = protons + neutrons.

Detailed explanation-2: -The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).

Detailed explanation-3: -The mass number of an atom is calculated by adding together the number of protons and neutrons that are found within that atom.

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