Question

iii. The number of electrons in an element Z is 6 and the number of neutrons is 12.
Which of the following is the correct representation of the element?
15218
b. 16218
15216
d. 16215​

Answer 1

Explanation:

Z

A

X, where A stands for the atomic mass number which is the sum of protons and neutrons in the atom of an element and Z stands for an atomic number of the element which is the number of electrons in an atom of an element.

Atomic mass = Number of electrons + Number of neutrons

Atomic number = Number of protons = Number of electrons

Therefore, atomic mass =15+16=31 and atomic number is =15.

Answer 2

Answer:

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