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The property used by Mendeleev to classi...

The property used by Mendeleev to classify the elements in his periodic table is `"________"`.

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Atomic masses
Atomic masses
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What property did Mendelev use to classify the elements in his perodic table.

(a) Why do we classify elements? (b) What were the two criteria used by Mendeleev to classifiy the elements in his periodic table? (c) Why did Mendeleev leave some gaps in his periodic table? (d) In Mendeleev's periodic table, why was there no mention of noble gases like helium neon and argon? (e) Would you place the two isotopes of chlorine, Cl-35 and Cl-27 in different slots because of their different atomic masses or in the same slot because theri chemical properties are the same? Justify your answer.

Which important property did Mendeleev use to classify the elements in his periodic table and did he stick to that?

Mendeleev classified elements in order of increasing

Why did Mendeleev leave some vacant places in his periodic table ?

CENGAGE CHEMISTRY-PERIODIC CLASSIFICATION OF ELEMENTS AND GENERAL INORGANIC CHEMISTRY-Exercises (Fill In The Blanks)
  1. IUPAC name for the element with Z = 117 is "" and its symbol is " ".

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  2. In the long form of the perodic table, physical and chemical propertie...

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  3. The property used by Mendeleev to classify the elements in his periodi...

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  4. The elements which constitute 5f-block are called " " with atomic numb...

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  5. Elements of s and p blocks are collectively called ""

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  6. The group all members of which are in gaseous state under ordinary con...

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  7. Lather Meyer drew a graph showing the relation between atomic "" and ...

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  8. Ionic radii "" with increases in atomic number in a period and "" in...

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  9. The electron gain enthalpy of oxygen is "" that of sulphur.

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  10. On Mulliken scale the average of IP and EA is known as "" .

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  11. On the Pauling's EN scale, the element next to F is ""

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  12. The IE of Be is "" than that of B.

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  13. The bond angle in SO(4)^(2-) ion is "" .

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  14. The angle between two covalent bonds is maximum for (CH(4), H(2)O, CO(...

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  15. Second element of group 1 shows diagonal relationship with the first e...

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  16. The EN of the elements C, N, Si and P increases in the order of "" .

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  17. The decreasing ordr IE for elements Li, Be, C B is "" .

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  18. The type of magnetism exhibited by [Mn(H(2)O)(6)]^(2+) ion is "" .

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  19. Among the ions Cl^(ɵ), S^(2-) and Na^(o+), the largest ion is "" .

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  20. The inner electrons are shielded to a "" extent than the outer electro...

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