It would be generation 5 in which there will be almost 100% non-singing females if there are no changes in the birds’ environment and interactions
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
A salt is an ionic compound which needs a positive charge ion and a negative ion charge to form a salt.This means that the pair of element should be a metal and non-metal.This is simply because metal atoms tend to lose negative charge electrons and form positive ions while non-metals tend to receive the electrons from the metal atom to form negative charge ions.So answer is Cl and Li.
