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If Aufbau rule is not followed, K-19 wil...

If Aufbau rule is not followed, K-19 will be placed in ….. Block
(1) s (2) p (3) d (4) f

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In the absence of Aufbau rule, Electronic configuration and last filling electron decides the block
`K(19)" "1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(1) " "therefore" d-block"`
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VMC MODULES ENGLISH-PERIODIC PROPERTIES OF ELEMENTS -In Chapter Exercise-F
  1. If Aufbau rule is not followed, K-19 will be placed in ….. Block (1)...

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  2. Predict the blocks and periods of the following elements. Br (35)

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  3. Which of these is the weakest base?

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  4. Which of the following sequence correctly represents the decreasing ac...

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  5. Period to which Aluminium belongs is

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  6. Period to which Calcium belongs is

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  7. Period to which chlorine belongs is

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  8. Which of the following alkaline earth metal suphate salt is the least ...

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  9. Which of these alkali metal ions undergo the maximum hydration when ad...

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  10. Period to which Neon belongs is

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  11. The easily decomposable carbonate among these is,

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  12. Atomic number of an element is 33. State the group to which it belongs...

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  13. Which of these is the weakest base?

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  14. Atomic number of an element is 32. State the group to which it belongs...

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  15. Atomic number of an element is 36. State the group to which it belong...

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  16. Atomic number of an element is 37. State the group to which it belongs...

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  17. A : Solubility of alkaline earth metal carbonates decreases down the g...

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  18. Which of the following alkaline earth metal suphate salt is the least ...

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  19. Which of these alkali metal ions undergo the maximum hydration when ad...

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  20. Atomic number of an element is 53. State the group to which it belongs...

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  21. The easily decomposable carbonate among these is,

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