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An atom with atomic number 21 belongs to...

An atom with atomic number 21 belongs to the category of

A

s- block elements

B

p-block elements

C

d-block elements

D

f-block elements

Text Solution

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The correct Answer is:
C
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NARAYNA-PERIODIC TABLE -All Questions
  1. Which of the following pair has both members from the same group of th...

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  2. The element having the electronic configuration [Kr] 4d(10) 4f^(14) 5s...

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  3. An atom with atomic number 21 belongs to the category of

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  4. Which of the following is general is general electron configuration of...

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  5. In a given transition series the elements differ generally in the numb...

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  6. Transition elements are placed in the periodic table between the group

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  7. Regarding transitional elements the wrong statement is

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  8. The electron configuration of the element 'M' is [Ar] 3d^(10) 4s^(2) 4...

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  9. Which of the following is the smallest in size?

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  10. The correct order of atomic radii is

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  11. The element with the following atomic number may be bigger than alumin...

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  12. Which among the following group elements are smaller in size

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  13. Which of the following is an example of a positive ion and negative io...

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  14. The ionization potential (I(1)) of nitrogen (Z=7) is more than oxygen ...

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  15. Second ionization potential value is very low for

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  16. I(1) of an element X is 899" kJ mole"^(-1) and that of another element...

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  17. The first ionisation potential in electron volts of nitrogen and oxyge...

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  18. The second ionisation energy of N and O in electron volt are respectiv...

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  19. The first ionisation potential of Na,Mg,Al and Si are in the order

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  20. Electrons which have the highest penetrating power through lower orbit...

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