[ABCD]

The first element has a percent composition of 13.6 and is a cation with a half filled 'd' sublevel. If this element gave up the proper number off electrons it would have the electron configuration of the noble gas with a freezing point of -308.83 degrees Fahrenheit.

The second element had a percent composition of 47.7 and has a molar mass of 3.53*10^-5 short tons.

The third element has a percent composition of 17.9 is a nonmetal that has a boiling point which is 8275.78 degrees Fahrenheit than an element next to it in the same period.

The fourth element has 3 unpaired electron configuration and has an atomic radius of 4.66*10^-14 miles.

The molecular mass of the compound is 402.938 grams.

Questions:
1) The empirical formula is?
2) The molecular formula is?
3) The name of this formula is?

[billnotgatez]

A couple of issues with your post based on the supposition you have not read forum rules.
Please read forum rules.

You need to show some work so we can help you understand where you went wrong.
Do not use editor functions in a way that is distracting.
I bet you irritated many readers of your post with the arbitrary bold and color.

Do you know how to use the periodic table of element?