Which of the following statements is incorrect?

  • A
    Lithium and magnesium exhibit diagonal relationship.
  • B
    Elements of groups $1, 2, 13, 14, 15, 16$ and $17$ are known as representative elements.
  • C
    In the $5^{th}$ period,the subshells $5s, 4d, 5p$ are filled.
  • D
    The general configuration of $f$-block elements is $(n - 2)f^{1-14} (n - 1)d^{0-1} ns^2$.

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Similar Questions

Assign the position of the element having outer electronic configuration in the periodic table:
$(i)$ $ns^{2} np^{4}$ for $n=3$
$(ii)$ $(n-1)d^{2} ns^{2}$ for $n=4$
$(iii)$ $(n-2)f^{7} (n-1)d^{1} ns^{2}$ for $n=6$

Match the elements in List-$I$ with their symbols in List-$II$.
List-$I$ List-$II$
$(1)$ $Unnilbium$ $(A)$ $Db$
$(2)$ $Unnilennium$ $(B)$ $Lr$
$(3)$ $Unnilpentium$ $(C)$ $Mt$
$(4)$ $Unniltrium$ $(D)$ $Bh$
  $(E)$ $No$
  $(F)$ $Rg$

Provide the name,symbol,and atomic number of the first and last elements for each period from $1$ to $7$ of the periodic table.

Write the general outer electronic configuration of $s$-,$p$-,$d$- and $f$-block elements.

The $10^{th}$ element in the periodic table resembles the elements of which period?

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