Radium is a divalent chemical element; the cation is Ra2+.
Radium typically has a +2 charge, meaning it tends to lose two electrons to achieve stability.
The chemical formula of radium sulphate will be RaSO4, but this compound is not still prepared.
The largest nuclear charge in Group 2 is found in the element radium (Ra) with an atomic number of 88. This means radium has 88 protons in its nucleus, which gives it the largest nuclear charge in Group 2.
The ionic compound of Ra and N would be radium nitride (Ra3N2). Radium is a group 2 metal with a 2+ charge, while nitrogen is a group 15 nonmetal with a 3- charge. To balance the charges, two nitride ions are needed for every three radium ions, resulting in the formula Ra3N2.
The Total energy + the charge left
This is the isotope radium-226.
Radium has several isotopes, but the most common one is radium-226. This isotope has an atomic number of 88, indicating it has 88 protons. Since the mass number of radium-226 is 226, it contains a total of 226 nucleons, which includes both protons and neutrons. Therefore, radium-226 has 138 neutrons (226 - 88 = 138).
The density of radium at about room temperature is 5.5  g·cm−3. That's 5.5 grams per cubic centimeter, or 5.5 grams per milliliter. A link to the Wikipedia article on radium is provided.
Radon is an inert gas. It does not want to loan our or borrow electrons, so it is reluctant to form an ion. We usually don't speak of the ionic charge of radon because it doesn't want to react chemically with anything. It could be said to have an ionic charge or oxidation state of zero. (That's neither positive or negative. It does not want to loan out or borrow electrons.)
Radium cyanide has the chemical formula Ra(CN)₂. In this compound, one radium (Ra) atom is present along with two cyanide (CN) groups, each containing one carbon (C) atom and one nitrogen (N) atom. Therefore, the total number of atoms in radium cyanide is 1 (Ra) + 2 (C) + 2 (N) = 5 atoms.
The total charge would be +17 + (-10) = +7.
radium