Multiple Choice
Which element is described by an atom that has 19 protons and 20 neutrons?
1
views
4. Atoms and Elements
Isotopes
Struggling with Introduction to Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In atomic structure, how is the mass number of an atom calculated?
A
It is the same as the atomic number (the number of protons).
B
It is the sum of the number of protons and neutrons in the nucleus.
C
It is the sum of the number of protons and electrons in the atom.
D
It is the difference between the number of neutrons and protons in the nucleus.
Related Videos
Related Practice
