Answers

2015-06-18T19:25:29+05:30

S - BLOCK
1.The elements in which the last electron enters the s-subshell of their outermost energy level are called s - block elements.
2.This block is situated at the extreme left of the periodic table.
3.It contains elements of groups IA and IIA.
4.The general electronic configuration of these elements is ns to the  power of 1-2,where n represents the outermost shell.
 5.The elements IA group elements are called metals and that of IIA group elements are known as Alkaline earth metals.
6.H,Li,Na,Rb,Cs,Fr elements have 1 electron in their outer shell with ns to the power of 1 general outer shell configuration,they belongs to IA.
7.Be,Mg,Ca,Sr,Ba and Ra have 2 - electrons in their outer shell with ns² general outer shell configuration ,they belongs to IIA.

P - BLOCK
1.The elements in which the last electron enters the p-subshell of their outermost energy level are called p - block elements.
2.This block is situated at the extreme right side of the periodic table.
3.It contains elements of groups IIIA,IVA,VA,VIA,VIIA and VIIA.
4.The general electronic configuration of these elements is ns² np1-6 ,where n represents the outermost shell.
5.It includes metals,non metals,metalloids and inert gases.
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