Whats the chemical
formula of the compound?

CBrClF₂  

Explanation:

You list the halogens in alphabetical order and  use a subscript 2 to show that there are two F atoms.

The formula is CBrClF₂.

The name of the compound is .

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

→

the temperature of the gas, in k, not celsius.