Question

Identify the isotope that has atoms with 117
neutrons, 77 protons, and 77 electrons.
1. None of these
2. 194Ir
3. 77Pt
4. 117Hg
5. 117Os
6. 194Au
7. 77Ti

Answer 1

Explanation:

Since the atomic number is 77, this means that the element is iridium (Ir). The nucleide notation of this element is

$^{194}_{\:\:77}\text{Ir}$