Question

differentiate be the following

1)Stable electronic configuration & unstable electronic configuration

2)electrovalent bond & covalent bond

3)single covalent bond & triple covalent bond



From Dalal's icse chemistry class 9 chemical bonding chapter​

Answer 1

1.An stable electronic configuration refer to an atom in which the outermost shell is complete. Whereas an unstable electronic configuration refers ta an atom in which the outermost shell is incomplete

2.electrovalent bond

Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.

covalent bond

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding

3.single covalent bond

.A single covalent bond is when only one pair of electrons is shared between atoms. A sigma bond is the strongest type of covalent bond, in which the atomic orbitals directly overlap between the nuclei of two atoms

triple bond

A triple bond in chemistry is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond. Triple bonds are stronger than the equivalent single bonds or double bonds, with a bond order of three.

Answer 2

Answer:

1. stable electronic config means when an atom of an element has octet or duplet config (i.e., eight valence electrons or 2 valence electrons). An atom having stable electronic config is chemically inactive

whereas unstable electronic config means when an atom is chemically reactive and transfer and sharing of electrons take place between those atoms to attain a stable config.

2. electrovalent bond takes place between a metal and a nonmetal. It is the transfer(loss or gain) of electrons.

whereas covalent bond means when one or more pair electrons are mutually shared between 2 atoms and it generally takes place between 2 nonmetals.

3. In single covalent bond only one electron is mutually shared between two nonmetalic atoms. Example- HCl

in triple covalent bond 3 pairs of electrons are mutually shared between the nonmetallic atoms. example- nitrogen(N)

hope this helps u.!!