An atom has a net charge of -1.It has 18 electrons and 20 neutrons .it

1.	An atom has a net charge of -1.It has 18 electrons and 20 neutrons .its mass number is
Answer» MASS NUMBER will be 39 of the ATOM....

An atom has a net charge of -1.It has 18 electrons and 20 neutrons .its mass number is

Answer»

MASS NUMBER will be 39 of the ATOM....