Which one of the following is incorrect regarding Hydrogen?
discovered by Henry Cavendish
hydrogen was proposed by Antoine Lavoisier
On combination with alkali metals, it forms uninegative ion H–
Ionization energy of Hydrogen is lower than alkali metals.
Hydrogen was discovered by Henry Cavendish in 1766. The name hydrogen was proposed by Antoine Lavoisier. It forms metal hydrides with alkali metals.
Due to small atomic size of Hydrogen, the valence shell electron is tightly bound to the nucleus whereas valence shell electrons in alkali metals lack such attraction towards nucleus.
Due to this strong attraction force, it takes more energy to remove an electron from Hydrogen atom. Hence, (4)