1st semester final review #4: Atomic Theory/Waves/Isotopes

Front

What is the formula for the compound that forms when magnesium bonds with phosphorus?

Back

Mg₃P₂

Front

What is the total number of protons and neutrons in the nucleus of an atom called?

Back

Mass number

Front

Calculate the average atomic mass of argon given the isotopes 36Ar (0.337%), 38Ar (0.063%), and 40Ar (99.600%).

Back

39.99

Front

What does the atomic number of an element indicate?

Back

The number of protons in the nucleus of an atom.

Front

What are isotopes?

Back

Atoms of the same element that have different masses.

Front

What is the atomic number of oxygen?

Back

8

Front

How do you calculate the average atomic mass of an element with multiple isotopes?

Back

Multiply the mass of each isotope by its relative abundance and sum the results.

Front

What is the significance of the mass number in an atom?

Back

It indicates the total number of protons and neutrons in the nucleus.

Front

What is the difference between atomic number and mass number?

Back

Atomic number is the number of protons, while mass number is the total of protons and neutrons.

Front

What is an example of an isotope of carbon?

Back

Carbon-12 (¹²C) and Carbon-14 (¹⁴C).