Very Short Question and Answers - Valency

Valence electrons are the electrons present in the outermost shell of an atom.

The Bohr-Bury scheme describes the arrangement of electrons in different shells or orbits around the nucleus of an atom.

The maximum number of electrons that can be accommodated in the outermost shell is 8.

The valency of inert elements is zero, as they have a full outermost shell with 8 electrons.

The helium atom has 2 electrons in its outermost shell.

An octet means that the outermost shell of an atom contains 8 electrons, making it stable and less reactive.

The valency of hydrogen, lithium, and sodium is 1, as they can each lose one electron.

The valency of magnesium is 2 because it has two electrons in its outermost shell.

The valency of aluminium is 3 since it has three electrons in its outermost shell.

The valency of fluorine is determined by its tendency to gain one electron, giving it a valency of 1.

The valency of oxygen is 2, as it needs to gain two electrons to complete its octet.

The combining capacity of an atom is called its valency.

Atoms react to either gain, lose, or share electrons to achieve a full outermost shell or octet.

Noble gases like helium and neon have a valency of zero.

Chlorine has 7 electrons in its outermost shell.

The process is called chemical bonding or chemical reactions.

The K shell can hold a maximum of 2 electrons.

The reactivity of an element is mainly determined by the number of valence electrons.

To be stable, an element needs to achieve a full outermost shell with 8 electrons.

The valency of sulphur is 6, as it has 6 electrons in its outermost shell and needs to gain 2 electrons to complete its octet.