___ is the property by which an element tends to form chains of identical atoms.
Isomerism
Tetravalency
Catenation
Allotropy
The property of self-combination of the atoms of the same element to form long chains is known as : (a) protonation (b) carbonation (c) coronation (d) catenation
Question 49 (a) An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
(a) Identify the element X