The Representation of Isotopes with Different Numbers of Protons and Neutrons
What is the representation of an isotope with 83 protons and 122 neutrons?
a) Thallium-205
b) Bismuth-205
c) Thallium-205
d) Bismuth-205
What is the representation of an isotope with 31 protons and 39 neutrons?
a) Gallium-70
b) Arsenic-70
c) Platinum-170
d) Mercury-170
What is the representation of an isotope with 78 protons and 92 neutrons?
a) Platinum-170
b) Mercury-170
c) Platinum-170
d) Mercury-170
What is the representation of an isotope with 47 protons and 60 neutrons?
a) Silver-107
b) Palladium-107
c) Silver-107
d) Palladium-107
Answer:
The representation of isotopes with different numbers of protons and neutrons is as follows:
1. An isotope with 83 protons and 122 neutrons is represented as Thallium-205.
2. An isotope with 31 protons and 39 neutrons is represented as Arsenic-70.
3. An isotope with 78 protons and 92 neutrons is represented as Platinum-170.
4. An isotope with 47 protons and 60 neutrons is represented as Silver-107.
Isotopes are atoms of the same element that have different numbers of neutrons. This results in isotopes having different masses. The notation used to represent isotopes includes the element symbol, the mass number, and the atomic number.
What is the Mass Number of an Isotope?
The mass number of an isotope is the total number of protons and neutrons in its nucleus. It is denoted by the symbol A. The mass number gives an indication of the mass of the atom.
How to Determine the Representation of Isotopes?
In order to determine the representation of isotopes, you need to know the number of protons and neutrons in the nucleus of the atom. By matching this information with the known isotopes of elements, you can identify the correct representation.
Example:An isotope with 83 protons and 122 neutrons is represented as Thallium-205 because Thallium has an atomic number of 83 and the total number of protons and neutrons is 205. This follows the format for representing isotopes.
Understanding isotopes and their representation is important in the field of chemistry and nuclear science. It helps in identifying different forms of an element based on variations in their atomic structure.