Occurrence of Hydrogen
Occurrence of Hydrogen: Overview
This topic covers concepts, such as, Hydrogen, Debatable Position of Hydrogen in Periodic Table, Differences of Hydrogen from Halogens & Occurrence of Dihydrogen etc.
Important Questions on Occurrence of Hydrogen
Ionization of the hydrogen atom would give rise to

The position of which of the following elements is debatable?

Hydrogen resembles halogens in many aspects for which several factors are responsible. Which one is the most important in this respect?


The most abundant element in the universe is:

Compounds of carbon and hydrogen are called as

Write the electronic configuration and valency of hydrogen.

The most abundant element in the universe is:

Hydrogen resembles halogens in many respects for which several factors are responsible. Which one is most important in this respect?

Which of the following differs in terms of valency as that of hydrogen?

What are the reactants used for the production of ammonia?

gas is covalent and is an ionic compound. This is because

What is the first element in the periodic table?


Give three points in each case to show resemblance of hydrogen with halogens as well as with alkali metals.

Among the following, which are allotropes of hydrogen?

Which is a radioactive isotope of hydrogen?

Which of the following reactions releases hydrogen?


