Chapter 4 - Atoms - 4.4 Atomic Number and Mass Number - Questions and Problems - Page 117: 4.31

Completing the following table for atoms of essential elements in the body:

Answers are the ones in blue font. atomic number- is equal to the number of protons and electrons. mass number= number of protons + number of neutrons number of protons- is equal to the atomic number and the number of electrons. number of neutrons= mass number- number of protons number of electrons- is equal to the number of the protons and the atomic number.