Question

Which of the following is an example of diatomic molecule? *



H2O

HNO3

NH3

HCl
​

Answer 1

The example of diatomic molecule:

$\large{ \leadsto{ \boxed{ \bold{ \red{HCl}}}}}$

HCl is a molecule of compund having two atoms, one atom of Hydrogen and another atom of Chlorine. That's why, it is a diatomic molecule.

• Atomicity is the number of atoms in a molecule of the elementary substance (Element or Compound).
• Depending upon number of atoms in molecule, elementary substances are classified into Monoatomic, Diatomic, Triatomic, Polyatomic.

Explore more !!

Let's know something more about atoms and molecules:

• Monoatomic molecule have one atom in its molecule. Eg - Argon, Neon etc.(All noble gas)
• Diatomic molecule have two atoms in its molecule. Eg - Hydrochloric acid, Oxygen gas, Chlorine gas.
• Triatomic molecule have 3 atoms in its molecule. Eg - Ozone, Water, Sodium oxide etc.
• Polyatomic molecule have more than 4 atoms inits molecule. Eg - Sucrose, Sulphur etc.

☯️ Other terms in the concepts:

• Valency is the tendency of any element to form compounds. The Valence electrons are the electrons found in the outermost shell of atom.
• Atomic size is the size of an atom which is extremely small. Atoms are spherical, hence their radii is known as atomic radii.
• Ion is a elementary substance/species carrying a net positive or negative charge.

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Answer 2

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➠ Which of the following is an example of diatomic molecule? 

→H2O

→HNO3

→NH3

→HCl

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$\huge\bold{\mathtt{\fcolorbox{Black}{Pink}{ANSWER}}}$

${\red\bigstar\large\bold{\mathrm{\underline{\green{HCl}}}}}$

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☯ Diatomic molecule - The molecules which is made up of only two kind of atoms be it same or different . Like here HCl - two different types of atom → Hydrogen and Chlorine .

${\red\bigstar\large\bold{\mathrm{\underline{\green{Other\:Examples:}}}}}$ $\sf H_2 , N_2 , O_2 , etc.$

☯ The homonuclear diatomic gases and noble gases together are called "elemental gases" .

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