Answer:
The answer to your question is Protons = 78, Neutrons = 117, Electrons = 76
Explanation:
¹⁹⁵Pt²⁺
Protons are equal to the atomic number, Platinum has an atomic number of 78 so the number of protons = 78.
The number of neutrons = Mass number - Number of protons
= 195 - 78
= 117
The number of electrons is equal to the number of protons - two, we know this because of the 2+ exponent next to the Platinum symbol.
Number of electrons = 78 - 2
= 76
