Using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. Explain your answers.

Gas

Explanation: Because to check temperature of a room you use a gas in then room

Be-4 Solid  

Mg-12 Solid  

Ca-20 Solid  

Sr-38 Solid  

Ba-56 Solid  

Ra-88 Solid  

All alkaline metals are solid, but have low melting points.

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons