Question

A monatomic anion is named by adding ___ to the stem part of the name?

1) a proton
2) an electron
3) a neutron
4) a negative charge

Answer 1

A monatomic anion is named by taking the element's name stem, adding the suffix '-ide', and then adding the word 'ion'.

Step-by-step explanation:

To name a monatomic anion, you take the stem of the element's name and add the suffix -ide, followed by the word ion. For example, the anion of chlorine is called the chloride ion, represented as Cl-.

Oxygen, which gains two electrons to achieve the electron configuration of the noble gas neon, forms oxide ion (O2-). Such anions are created when a neutral atom gains one or more electrons, resulting in a negative charge on the atom.

Answer 2

A monatomic anion is named by adding the suffix '-ide' to the stem of the name. Thus, there is no correct option.

Step-by-step explanation:

A monatomic anion is named by adding the suffix -ide to the stem part of the element's name, and then appending the word ion. For example, Cl becomes the chloride ion and O²⁻ becomes the oxide ion once they gain electrons. The process involves a neutral atom gaining electrons to achieve a complete outer shell, which typically mimics the electron configuration of the next noble gas.

An atom that gains one or more electrons will exhibit a negative charge and is referred to as an anion. In contrast, an atom that loses electrons becomes a positively charged cation. The atomic charge is calculated as the number of protons minus the number of electrons. For instance, a neutral oxygen atom, which has eight protons and electrons (Z = 8), becomes the oxide anion with a 2- charge after gaining two additional electrons (8 – 10 = 2-).

Thus, there is no correct option.