Question

What are negatively charged ions known as
a) Anions
b) Cat ions
c) Neutrons
d) None

Answer 1

The word ions basically means lack of electrons or presence of extra electrons in the outermost shell of an isolated gaseous atom. The neutrons of an atom are present in the nucleus and do not contribute to the formation of an ion. A negatively charged ion is basically an atom with more electrons in its outermost shell than its atomic number, as a result the atom is negative in nature.

Complete step-by-step answer:
Now let us first define what is an anion and a cation.
An anion is an atom with a net negative charge on it due to presence of extra electrons. A cation is an atom with a net positive charge due to lack of electrons from the outermost shell.
Hence from the above definition we can clearly conclude that a negatively charged ion is called an Anion.

So, the correct answer is “Option A”.

Note: A cation is formed by removal of electrons from the outermost shell of an isolated gaseous atom. Similarly, an anion is formed by addition of electrons to the atom or the ion in its outermost shell. It is not possible to form an ion by removing the proton from the nucleus and hence possessing a net negative charge. The charge on an atom is given by the number of protons plus the number of electrons. On a neutral atom the number of protons is equal to the number of electrons (both equal to the atomic number)and hence the atom is electrically neutral.