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Al and Ga have nearly the same covalent ...

Al and Ga have nearly the same covalent radii, because of 

A

Greater shielding effect of 's' electrons of 'Ga' atoms

B

Poor shielding effect of 's' electrons of 'Ga' atoms

C

Poor shielding effect of 'd' electrons of 'Ga' atoms

D

Greater shiclding effect of 'd' electrons of "Ga' atoms

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-ELEMENTS OF BORON FAMILY-OBJECTIVE EXERCISE - 2
  1. Which of the following is ionic

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  2. Among the following most electropositive element is

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  3. Al and Ga have nearly the same covalent radii, because of

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  4. The maximum covalency of aluminium is '6' where as that of boron is '4...

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  5. Which one of the following has the lowest melting point

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  6. H(3)BO(3)overset("Red heat")rarrX.X in the reaction is

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  7. The element of IIIA group with least density

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  8. The statements regarding 'B' and Al are I) Boron is a bad conductor ...

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  9. The correct order of melting points of IIIA group elements is

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  10. The IIIA group clement that does not displace hydrogen from hydrochlor...

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  11. 2X+6LiHoverset(450K)rarr B(2)H(6)+Y. The compounds, X and Y are

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  12. Among the III A group elements, the difference in the atomic radius is...

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  13. The correct order of ionization potential [IP(1)] among the IIA group ...

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  14. (A) : Increase in the atomic radius from B to Al is more than that of ...

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  15. Which of the following does not undergo hydrolysis?

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  16. The product formed in the reaction BCl(3)+H(2)Orarr

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  17. The correct increasing order of the stability of Al, Ga^(+), In^(+), T...

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  18. In the electrolysis of alumina using cryolite, the reaction that takes...

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  19. Hydrogen gas is liberated when aluminium is treated with A) Air B)...

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  20. Which of the following is weakest Lewis acid ?

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