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An element in oxidation state of +3 has...

An element in oxidation state of +3 has the electronic configuratioin : `[Ar] 3d^(3)`. Its atomic number is :

A

24

B

26

C

20

D

23

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The correct Answer is:
A
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MODERN PUBLICATION-UNIT TEST 6 -Questions
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  2. An element in oxidation state of +3 has the electronic configuratioin...

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  3. The correct order of acid strength is

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  4. Which one of the following has the regular tetrahedral structure ?

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  5. The oxidation state of nickel in K(4)[Ni(CN)(4)] is:

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  6. The number of ions per mole of the complex CoCl(3).5NH(3) in aqueous s...

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  7. In which of the following complexes nickel is in the highest oxidation...

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  8. The number of P-O-P bonds in the structure of phosphorus pentoxide and...

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  9. The coordination isomerism is exhibited by :

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  10. The number of unpaired electrons in outer orbital [Fe(H(2)O)(6)]^(3+) ...

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  11. Which of the following is not true? In acidic medium K(2)Cr(2)O(7) oxi...

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  12. In alkaline medium, KMnO(4) gets changed into :

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  13. Which of the following statement is not true?

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  14. Which of the following statement is not correct when a mixture of NaCl...

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  15. In the metallurgy of iron , when lime stone is added to the blast furn...

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  16. Which of the following ions has magnetic moment of 1.73 B.M. ?

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  17. Extraction of zinc from zinc blende is achieved by :

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  18. The formula of the complex, tris (ethylenediamine) cobalt (III) sulph...

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  19. which of the following has the smallest ionic radius ?

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  20. Which ion gives coloured solution ?

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