Question

why is only 'il' used for words like "logical , legal"

want full answer​

Answer 1

Answer:

because it is a conjunction

Answer 2

Answer:

Those are all negated forms of the original adjectives logical, legal and possible. Other common prefixes for negation are in- (like invalid), ir- (like irregular), un- (like unable), a- or -an (like atheist and anarchist (an- goes before a vowel instead of a-)), de- (like de-ice or decrypt, primarily used for verbs, and for reversing), and non- (which can go in front of any adjective or noun). Rarer prefixes include ab- (like abnormal), ig- (like ignoble)