Chemistry Classes

Type of reactions for tenth CBSE and lower classes in ICSE

Quick recap of periodic table

WHAT IS THE OXIDATION STATE OF I IN KI3 ANSWER ?

Fe2O3 an be written as Fe2O3 and FeO so it's a mixture of these two . In Fe2O3 Feis in +3 state and in FeO it is +2

Calculate oxidation number of Fe3O4 .Who can answer ?

Contact for online classes of IX TO X

Screening or shielding effect

Haloform (idoform ) har cbse ISC AUR UP KE EXAM AATA HI HAI TO EK SE DO MARKS SURE KAR LO

Answer

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Memorise general trend of size in periodic table