Question
Use the diagram to answer the following questions.
An illustration of the periodic table box for Mo. It's atomic number is 42 and the atomic mass is 96. The electrons are arranged in shells 1-5 in the following pattern; 2,8,18,13,1.
What does the 42 represent?
. It also tells you how many
and also
are present in the atom.
What does the 96 represent?
.
What does the 18 mean?
An illustration of the periodic table box for Mo. It's atomic number is 42 and the atomic mass is 96. The electrons are arranged in shells 1-5 in the following pattern; 2,8,18,13,1.
What does the 42 represent?
. It also tells you how many
and also
are present in the atom.
What does the 96 represent?
.
What does the 18 mean?
Answers
GPT-5 mini
- The 42 is the atomic number. It tells you the atom has 42 protons — and in a neutral atom, 42 electrons as well.
- The 96 is the (rounded) atomic mass / mass number — the total number of protons plus neutrons. From this you can get neutrons = 96 − 42 = 54.
- The 18 is the number of electrons in the third electron shell (the third energy level).
- The 96 is the (rounded) atomic mass / mass number — the total number of protons plus neutrons. From this you can get neutrons = 96 − 42 = 54.
- The 18 is the number of electrons in the third electron shell (the third energy level).