Question

A negatively charged ion is known as an anion.
(A) True
(B) False

Answer 1

Hint: An ion is an atom or group of atoms at which the number of electrons is not equal to the number of protons. If atom gains electrons have the net negative charged species are anions and an atom loses electrons has net positive charged species are cations.


Complete step by step solution:
Positive charge and negative species are formed from ionic substances.
Positive ions: More metals are typically forms of positive ions. The positive charge for a cation is shown by a number with a plus sign after the molecular formula. The examples of positive charged ions or cations by alkali metals, alkali earth metals, and d-block elements.
Aluminium - $A{{l}^{+3}}$
Barium - $B{{a}^{+2}}$
Cadmium - $C {{d}^{+2}}$
Calcium - $C {{a}^{+2}}$
Chromium (III) - $C{{r}^{+3}}$
Cobalt - $C{{o}^{+2}}$
Copper (II) - $C{{u}^{+2}}$
Magnesium - $M{{g}^{+2}}$
Sodium - $N{{a}^{+2}}$
Some non-metals like hydrogen exhibit +1 positively charged species, chlorine possess positive charge from +1 to +5, etc.
Negative ions: atoms gain electrons as forms negatively charged ions are called an anion. The negative charge on an atom is shown by number with ‘-’ sign after the formula. The number of electrons gained by the atoms will represent a number after the ‘-’ symbol. Mostly non-metals from p-block elements form these types of negatively charged anions. Examples of anions are:
Hydride - ${{H}^{-}}$
Bromide - $B{{r}^{-}}$
Oxide - ${{O}^{-2}}$
Nitride - ${{N}^{-3}}$
Sulfide - ${{S}^{-2}}$
 Hence, the given statement is “A negatively charged ion is known as anion” is True.

The correct answer is Option A.


Note: If an ion formation from two or more atoms is called a polyatomic ion. The central atom loses electrons in polyatomic molecules which forms positively charged species called a polyatomic cation. Similarly, the central atom gains electrons in a polyatomic molecule which forms negatively charged species called polyatomic anions. $N{{H}_{4}}^{+},{{H}_{3}}{{O}^{+}}\And C{{H}_{3}}CO{{O}^{-}},C{{O}_{3}}^{-2}$ are the examples of polyatomic cations and anions respectively.