What is true about the elements that are in the same group? They will contain the same number of protons.
They will have the same atomic mass.
They will emit X-rays of similar frequency.
They will display similar chemical and physical properties.

A5.000 g sample of niso4 h2o decomposed to give 2.755 g of anhydrous niso4. what is the formula of the hydrate? what is the full chemical name for the hydrate? what is the molar mass of the hydrate? niso4•_h2o what is the mass % of water in the hydrate?