Concept explainers
To explain: The comparison of an atomic number of an element with the number of electrons that surrounds the nucleus.
Explanation of Solution
Introduction:
The atom consists of a nucleus that is positively charged and a negatively charged electrons revolve around the nucleus in a regular orbits. Protons and neutrons together forms the nucleus of an atom.
For a given atom, the number of electrons is equal to the number of protons in that atom. Since the atomic number of an element represents the number of protons present in its nucleus, it can also say that the atomic number of an element is equal to the number of electrons that normally surround the nucleus. If the atom gains or loses an electrons it becomes ions but the atom is of the same element. While if the number of protons in the nucleus of an atom is changed, then the element itself is changed.
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