Why is the atomicity of hydrogen 2?

Answer: Each Hydrogen atom has 1 electron. To gain stability , it has to gain another electron . When 2 hydrogen atoms come together , they form a covalent bond with each other , both of them getting 2 valence electrons in total and attaining stability through Duplet configuration.

How do you calculate atomicity?

There is a simple way to determine the atomicity of any element. It can be determined as a ratio of molecular mass and atomic mass. For example, using the case of oxygen molecule, the molecular mass is 32 (= 2×16), while the atomic mass is 16. If we divide the two, we get atomicity as 2 (=32/16).

What is the atomicity of hydrogen nitrogen and chlorine molecule?

Hydrogen (H2), nitrogen (N2), oxygen (O2), chlorine (Cl2), bromine (Br2), and iodine (I2), all have 2 atoms each in their molecules. So, the atomicity of hydrogen, nitrogen, oxygen, chlorine, bromine and iodine is 2 each.

What is the atomicity of hydrogen and halogens?

Atomicity of both halogen and hydrogen is 2.

What is the valence of hydrogen?

one valence electron
Hydrogen has only one valence electron and can form only one bond with an atom that has an incomplete outer shell.

What is the Valency of hydrogen?

Atomic Structure | Exercise

Elements/Radicals	Symbol	Valency
1. Potassium	K	1
2. Sodium	Na	1
3. Hydrogen	H	1
4. Calcium	Ca	2

What is molecule class 9th?

A group of two or more than two atoms of the same or different elements that are chemically bonded together is called a molecule. For example: Two atoms of hydrogen (H2) and one atom of oxygen (O2) react with each other and form one molecule of water.

What is the atomicity of HCl?

2
Given a molecule, HCl, i.e, hydrochloric acid is made up of two atoms. 1 atom is an H atom and another atom is Cl. So, the atomicity of HCl = 2.

Where is hydrogen in the periodic table?

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.

Does hydrogen have 1 or 2 valence electrons?

Each hydrogen has 2 valence electrons, the same as helium. Oxygen has 8 valence electrons in the product, the same as neon. Each hydrogen has 2 valence electrons, the same as helium.

https://www.youtube.com/watch?v=lQ5s646CO_0