valence shell

The outermost shell of an atom is called its Valence shell. It is the decisive shell during a chemical reactio..

The VSEPR theory, proposed by R.J.Gillespie and R.S. Nyholmm in 1957, is based on the repulsions between the electron-pairs in the valence-shell of the atoms in the molecule. It was developed to predict the shapes of the molecules in which the atoms are bonded together with single b..

Remember : When one pair of electrons is shared between the atoms, a single bond is established between the atoms, e.g., H-H and Cl-Cl. When two pairs of electrons are shared, a double bond is established, e.g., O=O. When three pairs of electrons are shared, a triple bond is establishe..

The electrons present in the outer most shell are called valence electrons. The valency of an element is defined as its 'combining capacit..

Metals have 1 to 3 electrons in the outermost shell of their atom..

Valency - Valency is the combining capacity of an atom. It is equal to the number of electrons the atom loses, or gains or shares when it combines with one or more atoms. Depending on whether the atom loses, gains or shares electrons, the valency may be positive or neg..

The outermost shell of an atom is known as the valence shell. The electrons present in the valence shell are called valence electron..