Question

The__is positively charged central part of the atom.
Atoms of the same element having same atomic number but different mass number are known as ____​

Answer 1

Explanation:

nucleus

The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge).

These different kinds of the same element are called isotopes. Isotopes are atoms that have the same atomic number (and are therefore of the same element) but different mass numbers. The composition of atoms of the naturally occurring isotopes of carbon are shown in Table 4.2.

Answer 2

Answer:

Isotopes of an element are atoms with the same atomic number but different mass numbers; isotopes of an element, therefore, differ from each other only in the number of neutrons within the nucleus.

Explanation:

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