Wrong Problems 11/27/2024

Memorise Periodic Table

#1 Solving mass number with proton and neutron.

Mass Number = Number of Protons + Number of Neutrons

#2 Solving relative atomic mass

Do not forget to convert the percentage to integers.

1. Carbon naturally exists as three isotopes: carbon-12, with an abundance of 98.9%, carbon-13, with an abundance of 1.1%, and carbon-14, with an abundance of 0.01%. What is the relative atomic mass of carbon?

2. Oxygen has three naturally occurring isotopes: oxygen-16, with an abundance of 99.76%; oxygen-17, with an abundance of 0.04%; and oxygen-18, with an abundance of 0.20%. Calculate the relative atomic mass of oxygen.

3. What is the difference between the isotopes of carbon, specifically carbon-12, carbon-13, and carbon-14, in terms of their proton and neutron counts?

4. What is the difference between the isotopes of oxygen, specifically oxygen-16, oxygen-17, and oxygen-18, in terms of their proton and neutron counts?

Flashcard

What is an element?

An element is a substance made up of only one type of atom, so where all the atoms of a substance have the same number of protons.

What does relative atomic mass mean?

Relative atomic mass is the average mass of all the isotopes of an element, taking into account the abundance and mass number of each isotope.