Rutherfordium is radioactive and a solid, liquid, and gas;)
Radium is a solid, radon is a gas. Both are radioactive.
Radium is a solid, radioactive, alkaline earth metal.
I don't know about radon, but xenon gas, also a noble gas, is an anion when it makes compounds, as rarely as it does.
The radium nitride (Ra3N2) has a black color.
The noble gas notation for radium (Ra) is [Rn] 7s². This notation indicates that radium has the same electron configuration as radon (Rn), which is the nearest noble gas, followed by two additional electrons in the 7s subshell.
A gas at ordinary temperatures and pressures.
Radium is a solid, radon is a gas. Both are radioactive.
To avoid the oxydation of radium (as a metal).
The boiling pint of radium is 1 737 0C.
Radon
Radon
This noble gas is radon.
Radium is a solid, radioactive, alkaline earth metal.
Xenon is a noble gas so it doesn't bond, but radium bonds pretty well Xenon is the only noble gas that bonds with a other element.
I don't know about radon, but xenon gas, also a noble gas, is an anion when it makes compounds, as rarely as it does.
The radium nitride (Ra3N2) has a black color.
Chlorine gas (Cl2)