Atoms are isoelectronic when they have the same electron configuration. Therefore, an anion isoelectronic to krypton is bromide. A cation isoelectronic to krypton is rubidium.
None. The Se2- ion is isoelectronic with Krypton.
krypton
yes
no
Krypton and selenide ion are isoelectronic with 36 electrons each
Bromide ion is isoelectronic with Krypton.
Krypton and Selenide ion have 36 electrons and are isoelectronic
Ca2+ is isoelectronic with the noble gas, Argon. F-, Mg2+ are isoelectronic with the noble gas, Neon. I- is isoelectronic with the noble gas, Xenon
No noble gas is isoelectronic with the element chlorine. But argon is isoelectronic with the chloride ion.
Phosphide is isoelectronic with argon.
Potassium is isoelectronic with the cation K+.