Question

Write a short note on S block elements and their properties.

Answer 1

Answer:

these elements contain 1 or 2 electron in s-subshell of outermost shell . Elements of 1or 2 group belong to this class.These elements enter into chemical reaction by losing valency electrons so as to acquire noble gas configuration in the outer most orbit.

Answer 2

$\blue{s - block \: elenents} -$

element in which last electron enters in its subshell are known as

s-block elements.

ELECTRONIC CONFIGURATION --

${ns}^{1} \: \: or \: {ns}^{2}$

GENERAL PROPERTIES-

1. they are soft metals.
2. they have low melting point.
3. they have low ionization enthalpy.
4. they give colour to flame when they burn in it.
5. they are good reducing agent.
6. first group members has + 1 state and second group members have + 2 state.
7. they are present in 1st and 2nd group of periodic table .
8. S block elements are also known as Representative elements or normal elements .