PERIODIC TABLE

ఆధునిక ఆవర్తన పట్టికలో మీకు కావలసిన మూలకంపై క్లిక్ చేసి ఆ మూలక సమాచారం పొండండి.

MODERN PERIODIC TABLE

GROUP	1	2		3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
PERIOD	I A	IIA		III B	IV B	V B	VI B	VII B	VIII	VIII	VIII	I B	II B	III A	IV A	V A	VI A	VII A	O
1	H																		He
2	Li	Be												B	C	N	O	F	Ne
3	Na	Mg												Al	Si	P	S	Cl	Ar
4	K	Ca		Sc	Ti	V	Cr	Mn	Fe	Co	Ni	Cu	Zn	Ga	Ge	As	Se	Br	Kr
5	Rb	Sr		Y	Zr	Nb	Mo	Tc	Ru	Rh	Pd	Ag	Cd	In	Sn	Sb	Te	I	Xe
6	Cs	Ba		Lu	Hf	Ta	W	Re	Os	Ir	Pt	Au	Hg	Tl	Pb	Bi	Po	At	Rn
7	Fr	Ra		Lr	Rf	Db	Sg	Bh	Hs	Mt	Ds	Rg	Cn	Nh	Fl	Mc	Lv	Ts	Og
			La	Ce	Pr	Nd	Pm	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb
			Ac	Th	Pa	U	Np	Pu	Am	Cm	Bk	Cf	Es	Fm	Md	No

ఒక మూలకం యొక్క ఎలక్ట్రాన్ విన్యాసాన్ని బట్టి దాని పీరియడ్ మరియు గ్రూపులను అతి సులభంగా గుర్తించడం ఎలా?

How to decide period and group of an element, which is given in the form of electronic configuration:                      

We know the electronic configuration can be written as three types. They are,

1. In the full form (Normal form or nl^x form): Mg: 12- 1s² 2s² 2p⁶ 3s²     Na: 11- 1s² 2s² 2p⁶ 3s¹               Cl: 17- 1s² 2s² 2p⁶ 3s² 3p⁵

2. In the Short form with noble gas formula: Mg: 12- [Ne] 3s²      Na: 11- [Ne] 3s¹      Cl: 17- [Ne] 3s² 3p⁵             Li: 3- [He] 2s¹

  (In this we replace the previous inert gas electronic configuration with its formula in [     ] type of brackets. This is not used for noble gases)

3. In the very short form with Arabic numbers: Mg: 12- 2, 8, 2     Na: 11- 2, 8, 1      O: 8- 2, 6    N: 7- 2, 5          

(In this form we write the Arabic numericals of the number of electrons present in the order of orbits.)

Let us understand how to know Period and Group of a given electronic configuration?

 

Form of Electronic configuration	Period	Group
1. In the full form	The number of outer orbit Or The greater value of ‘n’ in the electronic configuration	In Roman	(Total number of electrons in the outer most orbit in roman number)A
		In Arabic	If total number of electrons in the outer most orbit is less than 3	Total number of electrons in the outer most orbit in Arabic number
			If total number of electrons in the outer most orbit is greater than 2	(Total number of electrons in the outer most orbit in Arabic number if it is greater than 2) + 10
2. In the noble gas form	The number of outer orbit Or The greater value of ‘n’ in the electronic configuration	In Roman	(Total number of electrons in the valency electronic configuration in roman number)A
		In Arabic	If total number of electrons in the outer most orbit is less than 3		Total number of electrons in the outer most orbit in Arabic number
			If total number of electrons in the outer most orbit is greater than 2		(Total number of electrons in the outer most orbit in Arabic number if it is greater than 2) + 10