Effect in carbon monoxide

Which of the following elements would you expect to have the lowest ionization energy value? fluorine, lithium, neon, nitrogen

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?