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Atoms and ions that have the same electron configuration are said to be isoelectronic. Examples of isoelectronic species are N3–, O2–, F–, Ne, Na+, Mg2+, and Al3+ (1s22s22p6). Another isoelectronic series is P3–, S2–, Cl–, Ar, K+, Ca2+, and Sc3+ ([Ne]3s23p6).

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Ionic compounds The Li+ ion contains two electrons, same as the helium atom. Li+ ions are isoelectronic with helium.

Answer: K+ and Ar Two species are isoelectronic if they have the same number of electrons.

Hence, the total number of electrons in Fe3+ F e 3 + is 23. Since the number of electrons in Cl− and Ca2+ C a 2 + is 18 respectively. Hence, a and d options are isoelectronic pairs.

Answer: Isoelectronic species are known as atoms or ions that have the same number of electrons. In isoelectronic species, there the number of electrons would be equal but the elements would be different. In other words, ions and atoms which are having equal numbers of electrons are called the isoelectronic species.

Isoelectronic can be defined as 2 molecules or atoms having equal number of valence electrons present in their orbit. Note: Some examples of isoelectronic species are carbon monoxide and nitrogen because they have equal numbers of electrons that both contain 10 valence electrons.

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Correct option A CO N2 Explanation:CO and N2 are isoelectronic because both have 14 electrons.

– For finding the isoelectronic pairs, we can just add the number of electrons of each atom in the species and also the charge of the species (if present). – Then, if the number of electrons are equal in both species, they are said to be isoelectronic pairs.

Step 2: We can see that Cu+ and Zn2+ have the same number of electrons which means they are isoelectronic.

– Isoelectronic pairs are those pairs of atoms, ions or molecules that have the same number of electrons in them. – As the number of electrons in both species is equal (32 electrons), they are an isoelectronic pair.

Examples of particles that are isoelectronic would be: an argon atom and a (-1) chloride ion. Both have 18 electrons, arranged in the same numbers in the same shells. a water molecule and a hydronium ion are also isoelectronic. In both cases, we see eight electrons arranged about the oxygen atom, with hydrogen atoms bonded to this central oxygen.

The sodium ion is isoelectronic with the neon atom . Consider a similar process with magnesium and with aluminum: In this case, the magnesium atom loses its two valence electrons in order to achieve the same noble-gas configuration. The aluminum atom loses its three valence electrons.

An Isoelectronic Series is a group of atoms/ions that have the same number of electrons . N 3-, O 2-, F -, Ne, Na +, Mg 2+, Al 3+ This series each have 10 electrons.

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  • K+has 19 protons,a nuclear charge of+19.
  • Ca+2 has 20 protons,a nuclear charge of+20.