[시1발버러지새끼들아]

Hi, I was wondering the effective nuclear charge.

In the periodic table, the effective nuclear charge increases in the same family.

but my book said that it decreases because atom radius increases so that it means decreasing of effective nuclear charge.

I think the book is wrong...

Do u think so???

*MOD Edit* -- Extra text removed

[Hunter2]

Something to read:

https://en.wikipedia.org/wiki/Effective_nuclear_charge

[Sylvia Goade]

Something to read:

https://en.wikipedia.org/wiki/Effective_nuclear_charge

still hard to understand. 

[Wystale]

Hi,
The effective nuclear charge decreases in the same family. When you go down, there is more core electrons (the number of valence electrons stay the same), so if we consider one valence electron, the charge he perceives will be more attenuate.

[kelnet100]

A note about the relationship between atomic radius and effective nuclear charge... across a period the atomic radius decreases because there are more protons in the nucleus, which allows them to pull the electrons in more closely.