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Question
The structure of sodium atom is shown in the figure given alongside. Identify the correct statement.
Atomic no. of sodium is 11 and its mass number is 23. Hence no. of neutrons is :
The structure of sodium atom is shown in the figure given alongside. Identify the correct statement.
Atomic no. of sodium is 11 and its mass number is 23. Hence no. of neutrons is :Open in App
Solution
The correct option is B 12
The mass number A,also called atomic mass is the total number of protons and neutrons (together known as
nucleons) in an atomic nucleus. It determines the atomic mass of atoms. The difference between the mass number and the atomic
number gives the number of neutrons (N) in a given nucleus: N is equal to A-Z.
23 - 11 = 12
The mass number A,also called atomic mass is the total number of protons and neutrons (together known as nucleons) in an atomic nucleus. It determines the atomic mass of atoms. The difference between the mass number and the atomic number gives the number of neutrons (N) in a given nucleus: N is equal to A-Z.
23 - 11 = 12
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