Answer: It is a negatively charged particle, located in the outermost shell of an atom, that can be transferred to or shared with another atom. Or for short it just means <u>Negatively charged particle</u>
Hope thsi helps!
The answer can be obtained using a calculator.
It corresponds to a notable identity
sin (45) =
/ 2
sin (45) = 0.7071
/ 2 = 0.7071