Science Online What's new?
Halogens are located on the right side of the modern periodic table before the inert gases. The halogens are elements of group 7 A (17) in the p-block, and Halogens are monovalent elements as...
The alkali metals are located on the left side of the modern periodic table in group (1) or (1 A). They are the first group of s-block, the alkali metals are monovalent elements as they...
A species is a group of more similar living organisms of the same shape that can reproduce to give birth to new fertile individuals, which are able to reproduce and keep the existence of...
Mammals are classified according to the kind and the number of teeth into the edentates mammals (The teethless mammals), and the mammals having teeth. This classification not only helps in identifying different species but...