Question

chemical properties of hydrogen​

Answer 1

Explanation:

please mark me as brainlest please please please please please please please please please please please i beg you please only 1 BRAINLEST answer left for next rank please please

Answer 2

Answer:

Water is made up of 2 molecules of hydrogen and 1 molecule of oxygen.

Explanation:

Chemical properties of Hydrogen are :

• Atomic Number = 1

• Atomic Mass = 1.007825 g.mol^-1

• Electronegativity according to Pauling = 2.1

• Density = 0.0899 × 10 ^ -3 g/cm^3 at 20° C

• Melting point = -259.2°C

• Boiling point = -252.8°C

• Vanderwalaas Radius = 0.12 nm

• Ionic Radius = 0.208(-1) nm

• Electronic Shell = 1s^-1

• Discovered By = Henry Cavendish in 1766*

* Hydrogen was observed and collected long before it was recognized as a unique gas by Robert Boyle in 1671, who dissolved iron in dilute hydrochloric acid.

Hope it helps u....All the Best...