Question

1. what is the isotope name for a nucleus with 10 protons and 27 nucleons? 3. what is the isotope notation for a nucleus with 76 protons and 171 nucleons?

Explanation:

Step1: Recall atomic number and mass number concepts

The atomic number ($Z$) is the number of protons and the mass number ($A$) is the number of nucleons (protons + neutrons).

Step2: Find element based on atomic number for first question

For a nucleus with 10 protons, from the periodic - table, the element is neon ($Ne$). The mass number $A = 27$. The isotope name is neon - 27.

Step3: Find element based on atomic number for second question

For a nucleus with 76 protons, from the periodic - table, the element is osmium ($Os$). The mass number $A = 171$. The isotope notation is $^{171}_{76}Os$.

Answer:

1. neon - 27
2. $^{171}_{76}Os$