Answer:
mass number of 38
Explanation:
Charge is 0 - No. of protons is equal to nom.of electrons, so no charge
Atomic number is 18 - Atomic number is number of protons
Mass number is 38- mass number is number of protons AND neutrons
Answer:
a mass number of 38
Explanation:
X This atom has no a negative charge .
because, number of protons (18) & electrons (18) are same. so,This atom is neutral.
X This atom has an atomic number of 20.
Because, it has 18 protons. so, This atom has an atomic number of 18.
X This atom has a positive charge
because, number of protons (18) & electrons (18) are same.so,This atom is neutral.
