SSC MTS EXAM

Detailed explanation-1: -If an atom has unequal numbers of protons and electrons, it will be charged and is called an ion. The reaction below shows how ions form.

Detailed explanation-2: -Ions are atoms that have a positive or negative charge because they have unequal numbers of protons and electrons. If atoms lose electrons, they become positive ions, or cations. If atoms gain electrons, they become negative ions, or anions.

Detailed explanation-3: -Atoms of a particular element must have the same number of protons but can have different numbers of neutrons. When an element has different variants that, while all having the same number of protons, have differing numbers of neutrons, these variants are called isotopes.

Detailed explanation-4: -Answer and Explanation: The subatomic particle that has a neutral charge is called the neutron. Protons are positively charged and together these two subatomic particles make up the nucleus of the atom. Electrons have a negative charge and orbit the positively charged nucleus.