A covalent bond is a chemical bond that occurs when two or more atoms share electrons. The sharing of electrons helps complete the outer shell, or valence shell, of both atoms. The sharing of electrons creates a stable balance of attractive and repulsive forces between atoms.

TLS Online TPP Program

#Id: 3778

#Section 2: General Biology

the atomic radii of chemical elements are a complicated task as the size of an atom is of the order of 1.2×10^-10m.

TLS Online TPP Program

#Id: 3777

#Section 2: General Biology

The diameter of the nucleus is in the range of 1.75 fm (1.75 × 10⁻¹⁵m) for hydrogen.

TLS Online TPP Program

#Id: 3776

#Section 2: General Biology

Elements are made of atoms. While the atoms may have different weights and organization, they are all built in the same way.

TLS Online TPP Program

#Id: 3775

#Section 2: General Biology

The electrons revolve in orbits around the nucleus.

TLS Online TPP Program

#Id: 3774

#Section 2: General Biology

Proton & neutron are found in the center of the atom, a place called the nucleus.

TLS Online TPP Program

#Id: 3773

#Section 2: General Biology

An atom has three parts: Proton carries positive charge, Electron carries negative charge, While Neutron carries no charge.