GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Chemical bonds formed by the sharing of electrons are called:
A
ionic.
B
covalent.
C
hydrogen.
D
isotopic.
Explanation: 

Detailed explanation-1: -A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.

Detailed explanation-2: -Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outermost (valence) electrons, atoms can fill up their outer electron shell and gain stability.

Detailed explanation-3: -Covalent bonds involve the sharing of electron pairs between atoms. Electron pairs shared between atoms of equal or very similar electronegativity constitute a nonpolar covalent bond (e.g., H–H or C–H), while electrons shared between atoms of unequal electronegativity constitute a polar covalent bond (e.g., H–O).

Detailed explanation-4: -Covalent bonds form when two atoms share one or more electron pairs. Typically, each atom donates one electron to the pair shared between them. When one atom has a greater pull (electronegativity) than the other, a dipole moment will arise. Ionic bonds form by the transfer of electrons from one atom to another.

Detailed explanation-5: -A covalent bond involves the mutual sharing of electrons between the atoms resulting in the formation of a molecule. Thus, they are also termed molecular bonds.

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