Asked by Anyce Tripp on Jun 20, 2024
Verified
When an element has Z=31 and 39 neutrons, what element and isotope is it?
A) 7031Ga{ }_{70}^{31} \mathrm{Ga}7031Ga
B) 7031Yb{ }_{70}^{31} \mathrm{Yb}7031Yb
C) 3170Ga{ }_{31}^{70} \mathrm{Ga}3170Ga
D) 3170Yb{ }_{31}^{70} \mathrm{Yb}3170Yb
Isotope
An isotope refers to one of two or more forms of an element with the same number of protons but a different number of neutrons in the nucleus, resulting in different atomic masses but similar chemical properties.
Element
A substance consisting of atoms which all have the same number of protons, fundamentally the simplest substances that cannot be broken down using chemical methods.
- Understand the concepts of atomic number (Z), mass number, isotopes, and their notations.
- Identify elements and their isotopes based on atomic structure including protons, neutrons, and electrons.
Verified Answer
OA
Otker AbabaikeliJun 22, 2024
Final Answer :
C
Explanation :
The element with atomic number (Z) 31 is Gallium (Ga), and with 39 neutrons, its mass number (A) is Z + N = 31 + 39 = 70, making it 3170Ga{ }_{31}^{70} \mathrm{Ga}3170Ga .
Learning Objectives
- Understand the concepts of atomic number (Z), mass number, isotopes, and their notations.
- Identify elements and their isotopes based on atomic structure including protons, neutrons, and electrons.