All halogens form only one oxoacid due to their high electronegativity and small size.

Which of the following scientists first discovered helium in the solar spectrum during a total solar eclipse?

From which type of phosphorus is alpha -black phosphorus formed?

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

Which of the following is not formed on hydrolysis of PCl5?

What do asthma patients use for respiration?

Which of the following oxoacid sulfur is known not to bear any acid salt?

“Ozone is a pollutant.” True or false?