Based on the provided image, identify the correct option for the elements $A, B, C, D, E$ given that $C$ has the electronic configuration $[Xe] \ 6s^2 \ 5d^1$.

  • A
    $A : La$
  • B
    $B : Sc$
  • C
    $E : Hf$
  • D
    All are incorrect

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Which of the following statements is incorrect?

Identify the correct statements from the following.
$(i)$ In the periodic table,about $78 \%$ of elements are metals.
$(ii)$ In a group,the metallic character decreases from top to bottom and in a period the nonmetallic character decreases from left to right.
$(iii)$ The element $Ho$ belongs to $f-$block.

Match the following elements with their respective blocks in the periodic table based on their atomic number $(Z)$:
Column-$I$Column-$II$
$A. Z = 37$$P. p-$ block
$B. Z = 42$$Q. f-$ block
$C. Z = 34$$R. d-$ block
$D. Z = 92$$S. s-$ block

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