Question

Which ions are isoelectronic with Krypton?

Answer 1

Answer:

Krypton has an atomic number 36, so it has 36 electrons. Bromine with an atomic number of 35 acquires one electron to attain 36 electrons. This makes it isoelectronic with krypton. The anion of bromine is Br-.

Answer 2

Bromine anion is isoelectronic with Krypton.

• "The species which have the same number of electrons called isoelectronic species".
• The number of electrons in Krypton is equal to 36.
• So, the species which have 36 electrons will be is electronic with Kr.
• Bromine has 35 electrons. So, if an electron is added to it then it will contain 36 electrons.
• So, $Br^-$ is isoelectronic with Krypton.