Pottassium selenate is isomorphous with potassium sulphate and contains 45.42% selenium by weight.Calculate the atomic weight of selenium.Also report the equivalent weight of potassium selenate.

Question

$\begin{array}{1 1}(a)\;118.2,130.1\\(b)\;120,131\\(c)\;121.3,132.4\\(d)\;122.1,129.2\end{array}$