Q. 115.0( 4 Votes )

Name the elements water is made of. What are the valencies of these elements? Work out the chemical formula for water.

Answer :

Water(H2O) is made up of two types of elements known as hydrogen and oxygen.

The valency of hydrogen is 1 as only one valence electron is present in its outermost shell and one is needed. The valency of oxygen is 2 as six valence electrons are present in its outermost shell and two are needed.


So according to the valencies of both the elements present in water, the formula becomes H2O.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
NCERT Exemplar | Atoms and MoleculesNCERT Exemplar | Atoms and MoleculesNCERT Exemplar | Atoms and Molecules48 mins
Quiz | Solve Imp. Qs. on Ions,Molecules and CompoundsQuiz | Solve Imp. Qs. on Ions,Molecules and CompoundsQuiz | Solve Imp. Qs. on Ions,Molecules and Compounds26 mins
Write Any Complex Chemical Formulae Using Sunil Sir's Trick!Write Any Complex Chemical Formulae Using Sunil Sir's Trick!Write Any Complex Chemical Formulae Using Sunil Sir's Trick!34 mins
Quiz | Mastering Mole Concept in 45 MinQuiz | Mastering Mole Concept in 45 MinQuiz | Mastering Mole Concept in 45 Min46 mins
Champ Quiz | Writing Complex Chemical FormulaeChamp Quiz | Writing Complex Chemical FormulaeChamp Quiz | Writing Complex Chemical Formulae34 mins
Champ Quiz | Are you a Master of Mole Concept ?Champ Quiz | Are you a Master of Mole Concept ?Champ Quiz | Are you a Master of Mole Concept ?35 mins
Quiz on Be a Master of Mole Concept in 30 Minutes!Quiz on Be a Master of Mole Concept in 30 Minutes!Quiz on Be a Master of Mole Concept in 30 Minutes!35 mins
Genius Quiz | Test Your Knowledge on Chemical FormulaeGenius Quiz | Test Your Knowledge on Chemical FormulaeGenius Quiz | Test Your Knowledge on Chemical Formulae33 mins
Be a Master of Mole Concept Within 45 MinutesBe a Master of Mole Concept Within 45 MinutesBe a Master of Mole Concept Within 45 Minutes2 mins
Quiz | Mastering in Finding The ValencyQuiz | Mastering in Finding The ValencyQuiz | Mastering in Finding The Valency27 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses