Answer:
OXYGEN-12:
# of protons:8
# of neutrons:12-8 =4
# of electrons:8
OXYGEN-13:
# of protons:8
# of neutrons:13-8=5
# of electrons:8
OXYGEN-14:
# of protons:8
# of neutrons:14-8=6
# of electrons:8
Explanation:
CALCULATION FORMULA
# of protons = POSITION IN PERIODIC TABLE (ATOMIC NUMBER)
# of ELECTRON = NO OF PROTONS
# of neutrons = MASS NUMBER (GIVEN IN NAME) - PROTON NUMBER
