Isoelectronic elements and their characteristics
Posted: Wed Jun 06, 2018 12:54 pm
by kellyz_1C
If two atoms are isoelectronic how does that affect their characteristics? Do they still follow the relative trends of the periodic table? (ie; electronegativity, electron affinity, size, etc...)
Re: Isoelectronic elements and their characteristics
Posted: Wed Jun 06, 2018 1:11 pm
by Betty Wolkeba section 1L
Two elements being isoelectronic just mean that they have the same number of electrons and the same electron configurations. They can still have different characteristics. For example, K+ and Cl- are isoelectronic with Argon, however, Cl- is larger than K+ because K+ has more protons so it'll pull its electrons in more tighter than Cl-. From that, we can then say that the atomic radius for Cl- is larger than K+, and the ionization energy for K+ is higher than Cl- (I think). Hope that helps somewhat !
Re: Isoelectronic elements and their characteristics
Posted: Sat Jun 09, 2018 5:39 pm
by Paywand Baghal
Betty Wolkeba section 1L wrote:Two elements being isoelectronic just mean that they have the same number of electrons and the same electron configurations. They can still have different characteristics. For example, K+ and Cl- are isoelectronic with Argon, however, Cl- is larger than K+ because K+ has more protons so it'll pull its electrons in more tighter than Cl-. From that, we can then say that the atomic radius for Cl- is larger than K+, and the ionization energy for K+ is higher than Cl- (I think). Hope that helps somewhat !
Doesn't isoelectronic just mean that both molecules or atoms have the same amount of electrons?