What do you understand by ‘Representative elements’? Name the groups whose elements are called representative elements.

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Representative elements are those elements within first two families that is group I and group II on the far left and the last six families or groups on the right of the periodic table.
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Specialist in Chemistry.

s and P block elements together are consifered as representative elements as theirtgroup no represent the characteristics of whole group.
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How should I do self-study of chemistry class 12 without any coaching to get a perfect score?
first you should know all the basic concepts and practise it . and watch youtube videos which is related to topics. it is more than enough to get a decent score. And also refer the old Model Question Papers.
Aditya
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How can one do well in class 11 and 12 (CBSE) without coaching?
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State as to why (a) Alkali metals show only +1 oxidation state. (b) Na and K impart colour to the flame but Mg does not.(c) Lithium on being heated in air mainly forms the monoxide and not the peroxide.(d) Li is the best reducing agent in aqueous solution.
a) There is only one valence electron in Alkali metals, on loosing one electron alkali metals achieve noble gas configuration which is most stable. Therefore, in order to achieve stability Alkali metals...
Abhijith
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5
Which of the following is used in photoelectric cells? (a) Na (b) K (c) Li (d) Cs
Cs is used in the photoelectric cell due to the lowest ionization enthalpy among all alkali metals.
Jitesh
In a metallic bond, why positive ions are called kernels, not cations?
The kernel is an atom without its valence electrons that are weakly bonded; no electron belongs to one nucleus, valence electrons can move one kernel to another. So it is known as kernel, not cation (have valency).
Shiva Institute of Science and Technology

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