Give the symbols for 4 species that are isoelectronic with the bromide ion, br-

1 answer:

5 0

Isoelectronic means that the species have the same number of electrons as the bromide ion, which has 36 electrons. Considering ions of the charge -2, +1, +2 and neutral atoms,

Krypton (Kr)
Selenium -2 (Se-2)
Rubidium +1 (Rb+)
Strontium +2 (Sr+2)

All have 36 electrons, which means they are isoelectronic with the bromide ion.

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