Which of the following elements does not belong to group 16 of the periodic table?

Which of the following noble gases is not obtained via fractional distillation?

Which of the following is a property of phosphine?

What will be the result of subjecting a blue litmus to chlorine gas?

Which of the following compounds react with water to give phosphine?

How many stable isotopes does the nitrogen atom have?

What is the half-life of radon?

What is the IUPAC name of NOCl?