Atomic Structure Chemistry_2024

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

How do you calculate average atomic mass?

Back

Average atomic mass is calculated by taking the weighted average of the masses of an element's isotopes based on their natural abundance.

Front

What is an isotope?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the relationship between atomic number and mass number?

Back

The mass number is equal to the atomic number plus the number of neutrons.

Front

How many neutrons are in an atom with a mass number of 11 and an atomic number of 5?

Back

There are 6 neutrons (11 - 5 = 6).

Front

What is the average atomic mass of silver?

Back

The average atomic mass of silver is 107.8677 amu.

Front

What is the significance of natural abundance in isotopes?

Back

Natural abundance refers to the relative amount of each isotope of an element found in nature, which affects the average atomic mass.

Front

How do you determine the number of protons in an atom?

Back

The number of protons in an atom is equal to its atomic number.

Front

What is the formula for calculating average atomic mass with two isotopes?

Back

Average atomic mass = (mass of isotope 1 * abundance of isotope 1) + (mass of isotope 2 * abundance of isotope 2).