Question

define radicals

define emprical formula

Answer 1

empirical formula is the simplest whole number ratio of a compound.

Answer 2

Answer:

Radicals are those molecules in chemistry that have a minimum of one unpaired electron and has some charge over it, may it be positive or negative. There are mainly two types of radicals, namely, Stable Radicals and Unstable Radicals. For example;

$SO_{4} ^{2-} ,OH_{} ^{-},NH_{4} ^{+}$

Empirical formula of the compound is the simplest number ratio of atoms of the elements present in the compound. It is quite helpful in finding the actual chemical formula when the percentage of the elements constituting it is given. For example;

Chemical formula = $C_{6}H_{12}O_{6}$

Empirical formula =  $C_{}H_{2}O_{}$