Q. Species Containing Same number of electrons are called?
Isoelectronic species are atoms, ions, or molecules that have the same number of electrons but may have different numbers of protons.
Example:
Na⁺ = 10 electrons
Ne = 10 electrons
F⁻ = 10 electrons
Mg²⁺ = 10 electrons
All these are isoelectronic.
Other options:
(A) Isotopes: Same atomic number, different mass number.
(B) Isobars: Same mass number, different atomic numbers.
(C) Isotones: Same number of neutrons.
Correct Answer: (D) Isoelectronic ✅
Explanation by: Jyoti
Isoelectronic species are atoms, ions, or molecules that have the same number of electrons but may have different numbers of protons.
Example:
Na⁺ = 10 electrons
Ne = 10 electrons
F⁻ = 10 electrons
Mg²⁺ = 10 electrons
All these are isoelectronic.
Other options:
(A) Isotopes: Same atomic number, different mass number.
(B) Isobars: Same mass number, different atomic numbers.
(C) Isotones: Same number of neutrons.
Correct Answer: (D) Isoelectronic ✅