One single covalent bond, hope this helps!
I would say the last one because unlike beta and alpha rays they will have no effect on the mass or atomic number because they are just composed of high energy radiation
Answer: 1
1.Cl K Ar is in order
2.Fe Co Ni isn't in order
3.Te I Xe isn't in order
4.Ne F Na isn't in order
<span>The human body is organized at different levels, starting with the cell. Cells are organized into tissues, and tissues form organs. Organs are organized into organ systems such as the skeletal and muscular systems.</span>
