Which of the following can not be isoelectronic?a)Two different cationsb)Two different anionsc)Cation and aniond)Two different atomsCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Atomic no is the representation of no of protons and that is also equal to no of electrons and we know that two different atoms never have same atomic no and so as electrons.

Answer

Cations and anions having the same number of electrons , same number of valence electrons and same structure , regardless of the nature of elements involved are called isoelectronic ions. But two different atoms did not show any of these features. They can never have same number of electrons.
So , the correct option is (D)

Answer

Explanation:

Isoelectronic species are those that have the same number of electrons. They can be ions or atoms. The key to determining if species are isoelectronic is to count the number of electrons in each species.

a) Two different cations:

Cations are formed when an atom loses electrons. Since two different cations can have different numbers of electrons, they cannot be isoelectronic.

b) Two different anions:

Anions are formed when an atom gains electrons. Since two different anions can have different numbers of electrons, they cannot be isoelectronic.

c) Cation and anion:

A cation and anion can be isoelectronic if they have the same number of electrons. However, this is not always the case, as the number of electrons in a cation and anion are typically different.

d) Two different atoms:

Two different atoms can have different numbers of electrons, so they cannot be isoelectronic.

Therefore, the correct answer is option D, Two different atoms.

Answer

In neutral atom the no. of protons =electrons.since no two atoms of same z.

Answer

A) Na+, Mg+2
b)F-,O-2
c) Na+, F-

Examples of first three options

But two different atom cannot have same electrons

Answer

Two different atoms can never be isoelectric.

Two or more ions or atom unknown to be isoelectric if they contain the same number of electrons in their Orbit. Different atoms can never be isoelectric because only one environment can have a unique number of electron present in the orbit.

Answer

Isoelectronic means having no net electric charge of voltage

so only arom is neutral in them

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