Question

name of this symbol @ and where is use of this symbol

Answer 1

at used in emails etc

Answer 2

The at sign (@), which is shorthand for the word "at," has become widely identified around the world due to its use in Internet e-mail addresses and Twitter names. Officially called an "asperand," the at sign separates the recipient's name from the domain name in e-mail; for example, [email protected] Twitter Symbol The at sign is a prefix to a member's name on Twitter