The elements radium and astatine both arise during the radioactive decay of uranium. They get together...

The elements radium and astatine both arise during the radioactive decay of uranium. They get together in the form of the salt RaAt2; the radius of the Ra2+ ion is 162 pm and the radius of the At- ion is 226 pm. (a) Predict the coordination number of Ra and At as well as the type of lattice that RaAt2 will adopt. (b) Calculate the lattice energy of RaAt2.

Expert Solution

queen_honey_blossom answered 1 year ago

The radioactive decay of radium 226Ra follows a first-order rate law. This decay process has a...

The radioactive decay of radium 226Ra follows a first-order rate law. This decay process has a half-life of 1600 years. (a). What is the value of the rate constant (expressed in s-1) for this decay process? (b). How many disintegrations per second would occur in a one-gram sample of 226Ra ?

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