Which Are The Only Two Elements On The Periodic Table That Are Liquid At Room Temperature?

Nitrogen And Hydrogen

Mercury And Bromine

Carbon And Helium

Oxygen And Neon

Which Are The Only Two Elements On The Periodic Table That Are Liquid At Room Temperature?

10th-class-mcqs-all-subjects9th-class-mcqs-all-subjects11th-class-mcqs-past-papers12th-class-macqs-past-paperscss-islamiat-past-papers-mcqsnts-online-test-preparation