B. 6.45 mol F2
The mole ratio here is 3 mol F2 for every 1 mol S. Multiply 2.15 mol S by 3 to get the mol of F2 needed.
These are known as adaptions which causes evolution
After that have been up for a while thay are metal
At room temperature hydrogen chloride is a colorless gas with a sharp or pungent odor. Under pressure or at temperatures below –85°C (-121°F), it is a clear liquid.
The number of the valence electrons determines the oxidation state i.e. oxidation number e.g. oxygen has 6 valence electrons the oxidation number is -2 that its need to fill up an octet structure.