An atom of an element has 26 electrons and has a mass number 56. The nucleus of this atom contains .......... neutrons.

An atom of an element has 26 electrons and has a mass number 56. The n

1.	An atom of an element has 26 electrons and has a mass number 56. The nucleus of this atom contains .......... neutrons.
A.	26
B.	36
C.	30
D.	56
Answer» D. 56

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An atom of an element has 26 electrons and has a mass number 56. The nucleus of this atom contains .......... neutrons.

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