Question

1. categorization 10 points which subatomic particle(s) are responsible for the atomic mass number of an element? atomic mass number no answers chosen possible answers electron neutron proton + neutron proton 4. ordering 10 points place the following elements in order by greatest atomic number to least atomic number.

Explanation:

Atomic Mass Number is the sum of protons and neutrons in an atom's nucleus.

Answer:

proton + neutron