Question

An isotope contains 47 protons, 47 electrons, and 60 neutrons. What is the identity of the isotope? Choose 1 answer:

Answer 1

The element with 47 protons is Silver.
The isotope number is derived by adding the number of neutrons and protons, which in this case equals 107. So, the isotope is Silver-107

Answer 2

Answer: The isotope is
`_(47)^(107)\textrm{Ag}`

Step-by-step explanation:

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

General representation of an isotope is
`_Z^A\textrm{Z}`

where,

A = atomic mass

Z = atomic number

X = symbol of an atom

We are given:

Number of neutrons = 60

Number of protons = 47

Number of electrons = 47

Mass number = 60 + 47 = 107

Atomic number = 47

Hence, the isotope is
`_(47)^(107)\textrm{Ag}`