The equilibrium distance between nuclei of two bonded atoms is called the _______ of a covalent bond.
Complete the following :
(a) When the nuclei of two different reacting atoms are of ......... mass, then a bond so formed is called ...................... covalent bond (equal, unequal, polar, non-polar).
(b) In case of non-polar covalent bond, the covalent bond is formed in the .......... of atoms and shared electrons are ........... distributed (corner, middle, equally, unequally)
(c) The ions in ................ compounds are held very strongly due to strong ............ forces (electrovalent, covalent, electromagnetic, electrostatic).
Half of the distance between two atoms when they are bound together by a single bond in a covalent molecule is called "Metallic Radius”.