Which of the following cations would need Roman Numerals in the name of the ionic compound that it forms?
Cadmium (Cd)
Platinum (Pt)
Germanium (Ge)
Francium (Fr)
Clear solection

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

Which element is the least metallic between cadmium, silver, zinc, or iron?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.