Question

charge of the species with 17 protons,18 neutrons and 18 electrons is 

Answer 1

Since neutron do not have charge , so total charge is
= +17 + (-18) = -1 e

where e=1.6 * 10^(-19)  C

Answer 2

CHARGE OF SPECIES WITH 17 PROTONS ,18 NEUTRONS AND 18 ELECTRON IS NEGATIVE