Question

why does lithium not form double salt?
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Answer 1

Answer:

Because it is only able to form monovalent ions. From our basic knowledge in chemistry we know that it has an atomic number of 3 which is equal to the number of electrons in the orbitals of this element. ... In the same time the third electron is relatively far away from this attractive force in a farther orbital.

Answer 2

Because it is only able to form monovalent ions.