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Mostly metals are hard, but metals of Is...

Mostly metals are hard, but metals of Ist A group are soft, because:-

A

Their metallic bond is weak

B

They have close packing

C

They have face-centred cubic lattice

D

Their b.p is low

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The correct Answer is:
A
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. The electrolytic reduction process is used for alkali metals, because:...

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  2. Which statement is false for an element, having 2,8,8,2 electronic con...

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  3. Mostly metals are hard, but metals of Ist A group are soft, because:-

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  4. The normal dehydrating agent, which used in a laboratories:-

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  5. What is the decreasing order of standard oxidation potential of K,Ca a...

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  6. Which statement will be true for solution, when Ba is dissolved in amm...

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  7. Alkaline earth metals show:-

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  8. In K,Rb and Cs, the decreasing order of reducing power in gaseous stat...

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  9. Prefix 'Alkali' denotes for:-

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  10. Which of the following is the weakest base:-

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  11. The correct order of density of following elements is: -(Be,Mg,Ca,Sr)

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  12. Identify the correct statement elemental sodium:-

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  13. On addition of metal ions, colour of liquid NH(3)solutions converts in...

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  14. Nitrate of an element of alkali metal group, decomposes on heating, gi...

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  15. On allowing ammonia solution of s-block metals to stand for a long tim...

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  16. Which of the following s-block eleent reacts with NaOH to give water s...

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  17. Dolomite is:-

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  18. Which is having highest m.p-

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  19. When Na and Li placed in dry air we get:-

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  20. Which of the following oxide having O(2)^(-2) (peroxide) anion:-

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