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Different Types of Atomic Species

Different Types of Atomic Species

Atomic species

Similarities

Differences

Examples

Isotopes (Soddy)

(i) Atomic No. (Z)

(ii) No. of protons

(iii) No. of electrons

(iv) Electronic configuration

(v) Chemical properties

(vi) Position in the periodic table

(i) Mass No. (A)

(ii) No. of neutrons

(iii) Physical properties

Isobars

(i) Mass No. (A)

(ii) No. of nucleons

(i) Atomic No. (Z)

(ii) No. of protons, electrons and neutrons

(iii)Electronic configuration

(iv) Chemical properties

(v)Position in the perodic table.

Isotones

No. of neutrons

(i)  Atomic No.

(ii) Mass No., protons and electrons.

(iii) Electronic configuration

(iv) Physical and chemical properties

(v) Position in the periodic table.

Isodiaphers

Isotopic No.

(N Z) or (A – 2Z)

(i) At No., mass No., electrons, protons, neutrons.

(ii) Physical and chemical properties.

(i) 92U235, 90Th231

(ii) 19K39, 9F19

(iii)29Cu65, 24Cr55  

Isoelectronic species

(i) No. of electrons

(ii) Electronic configuration

At. No., mass No.

(i) N2O, CO2, CNO-(22e-)

(ii) CO,CN-, N2 (14e-)

(iii) H-, He, Li+, Be2+ (2e-)

(iv) P3-, s2-, Ar, K+ and Ca2+(18e-)    

Isosters

(i) No. of atoms

(ii) No. of electrons

(iii) Physical and chemical properties.

 

(i) N2 and CO

(ii) CO2 and N2O

(iii) HCl and F2

(iv) CaO and MgS

(v) C6H6 and B3N3H6

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