QuestionWhat does the 195 indicate in the isotope notation for platinum, ${ }_{78}^{195} \mathrm{Pt}$ ?

Studdy Solution

STEP 1

Assumptions1. The isotope notation is given as ${ }_{78}^{195} \mathrm{Pt}$ . . The lower number (78) represents the atomic number, which is the number of protons in the nucleus of the atom.
3. The upper number (195) represents the mass number, which is the total number of protons and neutrons in the nucleus of the atom.
4. The symbol (Pt) represents the chemical element, in this case, Platinum.

STEP 2

In the isotope notation ${ }_{78}^{195} \mathrm{Pt}$ , the number195 is the mass number of the isotope.This mass number represents the total number of protons and neutrons in the nucleus of the atom.

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