Question

Li+ is isoelectronic with

Answer 1

Answer:

He,Be+2,e.t.c

Explanation:

li+ =3-1=2

He=2

Be+2=4-2=2

Answer 2

Explanation:

Isoelectronic species are the species which have same number of electrons in the atom. For example,

$F^-$, $Ne$ and $Na^+$ has same number of electrons which is 10

Li is the element which has atomic number = 3

Number of protons and the number of electrons are same in a neutral atom. So, number of electrons in Li is 3

In $Li^+$, the number of electrons is 2.

Thus, any atom which has total number of electrons = 2 is isolectronic with $Li^+$.

Few examples are, H⁻ , He , Be²⁺ , B³⁺ , C⁴⁺ , etc.