Question

chepten -
HEMISTRY
Les con CLASS FLADEN OF EEN
buat
Mendeleevs Periodic table]. Modoun beride kable, gradation
in probeerties , Valency, atomic number, Metallic and
non-metallic beobertes.
INTRODUCTIONS-
At present 114 element are known.
In the year 1800 only so elements are known.
CLASSIFICATION OF ELEMENTS :-
Clasification of elements in the basis of
factors such as density, malleabithy, ducklity, etc., and also
to consider whether they well metals as non-metals I.
What is the need for classification of elements?
VoD for CLASSIFICATION :-
helps in studing the element in
elements [Bobereiner's thinds Newland's law of Celave,​

Answer 1

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