Explain this how to use those formulas give 2,3 examples

check this shib

sir I m not clear about this topic and I m also confuse when I use these formula and the other one which is like zeff=z-sigma

mainly i have attached images about slater rules..so that you can easily find screening constant that is sigma...and nuclear charge is nothing but this is atomic number

the formula which is given in your booklet..it is derived from general formula by taking n

Don't be learn formula type...try to focus on concept behind slater's rule...it helps

and the screening effect is caused by internal electrons between nucleus and considering electrons...so dont be confuse here

got shib or still any doubt then ask?

sir i solved many problems regarding Zeff=Z-sigma but my confusion is for last electron of 2nd periond and last electron of d orbital that when i will use that formula instead of 1st one

yes see when the transition series comes then effective nuclear charges changes as d electrons comes...so use the formula which i have attached in the images

see this one..last part...read step 3...when 2nd orbit comes and when 3rd means d orbital comes

shib you can always use Zeff=Z - sigma...changes comes here in finding sigma value...so proceed the way which i have written to find sigma value

shib please mark the answer too if your queries is resolved😊

please mark the answer if it helps u shib😊🙏

got it shib if you have any doubt in this then please ask and clear your doubt

accept the answer if you got it 🙏🙏

dis you get it???

please accept the answer if you got it 🙏🙏

sir pz tell me when I will use these formulas I am not clear about the last electron of 2nd period

here this formula is used only for the electron present in 3d orbital so we will use the n value of n is equal to number of electrons in 3d orbital

got it??

such as for Sc =3d1 , n= 1, for Fe = 3d6 n= 6

got it??

sir for Sc and Fe i can use Zeff=Z-sigma this formula??

yes, why not

but you can't use this formula for Cr, and Cu because they have exceptional configuration

but I'll specially suggest you to uss systematic method to calculate Z°