Study of the First Element - Hydrogen

Hydrogen has atomic number 1

Hydrogen has atomic number 1, one valence electron, and electronic configuration 1. It is placed in the 1st period and Group 1A. Its position is contr

Hydrogen resembles alkali metals because it

Hydrogen resembles alkali metals because it has one valence electron, valency 1, forms H+, and acts as a reducing agent. It also resembles halogens be

Henry Cavendish prepared hydrogen from iron

Henry Cavendish prepared hydrogen from iron and dilute acids in 1766 and showed that water is formed when it burns in air. He called it inflammable ai

Hydrogen is found in traces

Hydrogen is found in traces in the earth's crust, atmosphere, volcanic gases, and in the atmospheres of the Sun and stars. In combined state, it occur

Very reactive metals like potassium

Very reactive metals like potassium, sodium, and calcium react with cold water to form hydroxides and hydrogen. Magnesium reacts slowly with boiling w