The atomic number of an element indicates the number of?

number of protons

The term atomic number, conventionally denoted by the symbol Z, indicates number of protons present in the nucleus of an atom, which is also equal to the number of electrons in an uncharged atom.

The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

The number is mostly related to the mass or the weight of the element.

Explanation:

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a polar bond is formed when electrons are shared unevenly between atoms