Kr
c. Rb plus. Kr has 36 electrons, the same as Se2-, As3+, Sr2+, and Br-. Rb plus has 35 electrons, which is not isoelectronic with Kr.
A selenide contain the anion Se(2-).
The Se2- ion has the largest radius because it has more electrons than As3-, leading to increased electron-electron repulsion and a larger atomic radius.
Krypton, calcium, chlorine+1 are isoelectronic with argon because they all have the same number of electrons, 18.
Hydroxide and water are isoelectronic with fluoride as they have the same number of electrons.
None. The Se2- ion is isoelectronic with Krypton.
isoelectronic
Krypton and Selenide ion have 36 electrons and are isoelectronic
c. Rb plus. Kr has 36 electrons, the same as Se2-, As3+, Sr2+, and Br-. Rb plus has 35 electrons, which is not isoelectronic with Kr.
A selenide contain the anion Se(2-).
Se2-
Neon is isoelectronic with the sodium ion.
Argon is isoelectronic with the sulfide ion.
The Se2- ion has the largest radius because it has more electrons than As3-, leading to increased electron-electron repulsion and a larger atomic radius.
Hydroxide and water are isoelectronic with fluoride as they have the same number of electrons.
Krypton, calcium, chlorine+1 are isoelectronic with argon because they all have the same number of electrons, 18.
The noble gas that is isoelectronic with S2- is Argon. Both S2- and Argon have 18 electrons.