Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

What is rule to locate the postion of period and group in modren periodic table? for example locate the postion of period and group of 115 element?
Asked by Babita Devi | 18 Oct, 2010, 07:09: PM
answered-by-expert Expert Answer
The principal quantum number of the valenc shell represents the period to which an element belongs.
 The  group to which an element belongs can be predicted on the basis of number of electrons present in its outermost shell or penultimate shell as given below:
  a)s-block        no of group =no of valence electrons
  b)p-block         no of group = 10+ no of valence electrons
   c)d -block        no of group = 2 + no of (n-1) d electrons
Answered by | 19 Oct, 2010, 08:05: PM
CBSE 11-science - Chemistry
Asked by sk5987020 | 21 Nov, 2023, 10:53: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by kamyabansal2905 | 16 Jul, 2022, 07:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Chaithujonnala1020 | 22 Jul, 2021, 06:00: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by muzainakallatra7 | 28 Mar, 2021, 09:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by jigneshd5127 | 18 Jan, 2021, 09:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by akhilshrivallibrundapallavi123 | 06 Nov, 2020, 07:15: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by negimanish9735 | 28 Oct, 2020, 09:30: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by abhishhadnur | 28 Sep, 2020, 04:04: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by sulaikhasulu393 | 30 May, 2020, 11:30: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×