Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
Please tell briefly about the effective nuclear charge and rules and how can it be determined.
Dear Bayana,efective nuclear charge can be determined by a simple formula:-write its electronic configuration in s,p,d,fthen
*electrons at (n) orbit contribute .35 to screening constant except the last electron.*electrons at (n-1) orbit contribute .8 to screening constant.*electrons at (n-2) and below contribute to 1 to screenig constant.then add total value to get the SCREENING CONSTANT=S.Eg. screening constant for magnesium:- Mg = 1s(2) 2s(2) 2p(6) 3s(2) screening constant = 2.1 + (2+6). (.8) + (2-1)(.35) = 2+6.4+.35 = 8.75HENCE [ENC]= Z(Atomic no.) - (Screening constant)= 12-8.75 = 3.25Hence we can compare the ENC for any atoms of the element by this simple rule.It helped me immensly....hope the same with you.Regards.
However, in an atom with many electrons the outer electrons are simultaneously attracted to the positive nucleus and repelled by the negatively charged electrons. The effective nuclear charge on such an electron is given by the following equation:
The shielding constant for each group is formed as the sum of the following contributions:
iron atom which has nuclear charge 26 and electronic configuration 1s22s22p63s23p63d64s2. The screening constant, and subsequently the effective nuclear charge for each electron is deduced as
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !