Question

Read the given passage and answer the following questions:

The elements in which the last electron enters the s-orbital of their outermost energy

level are called s- block elements. It consists of elements of group 1 and 2 having

the ground state electronic configuration of outermost shell as ns1 and ns2

respectively where n stands for outermost energy shell. The elements corresponding

to ns1configuration are called alkali metals and those corresponding to ns2

configuration are called alkaline earth metals.

(xix) What are s-block elements?

(xx) How many groups are present in s-block?

(xxi) Write down general electronic configuration of s-block elements.

(xxii) How many valence electrons are present in alkaline earth metals?

(xxiii) Give an example of alkali metal.​

Answer 1

Answer:

refer

Explanation:

refer the periodic table for more information,..

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