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State the characteristics of S-block elements …

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State the characteristics of S-block elements of modern periodic table.

Posted by Md Fardeen 6 years, 2 months ago

CBSE > Class 11 > Chemistry

1 answers

Yogita Ingle 6 years, 2 months ago

s block elements have spherical s orbital as their outermost orbital.
Since s orbital can accommodate a maximum of 2 electrons, each one of these elements have 1 or two electrons.
These s electrons are lost very easily to form monopositive ions by lsoing one electron in the outermost orbital or dipositive ions by losing 2 electrons.
They have low ionisation potentials and low electronegativities.
They are good conductors of heat and electricity, excepting H2 and He.
They are silvery, shiny metallic substances, (with the exception of hydrogen and helium which gaseous nonmetals).
They are malleable and ductile, i.e., we can make sheets and wires from them, (exception: H2, He)
They readily form ionic salts with most nonmetals.
Aqueous solutions of their oxides are alkaline.

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