Which element has the lowest atomic mass in group 6A

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

The rules of engagement (roe) working group is often used to (select all that apply.)

Describe the interaction that occurs between two objects with the same electrical charge.