Questions

An atom that loses or gains electrons is called as ion. Gaining of electron is negative charge and is called as Anion and lossing of eectron is called Cation.

The principal quantum number is the property of an electron which determines the energy of electron and the distance of electron from the nucleus of an atom.

Black

In biology, Homology is defined as any characteristic of biological organisms that is derived from a common ancestor. 

Hence, Homology is evidence of Common ancestry.

 Copyright law safeguards the expression of thoughts and facts, not simply the thoughts and actualities. Thoughts are fair diversion for everybody to express in their own words.

Works that are protected by copyright are ::

Literary works,

Musical works, including any accompanying words

Dramatic works, including any accompanying music

Pantomimes and choreographic works

Pictorial, graphic, and sculptural works

Motion pictures and other audiovisual works

Sound recordings

Architectural works.

A chemical bond in which the electrons are not shared equally due to differences in the electronegativity of the atoms.

The polarity of a covalent bond is measured using its dipole moment.

 Large dipole moment = more polar

 Small dipole moment = more nonpolar.