Which of the following statements is incorrect?

  • A
    Density increases across a period and decreases down a group as atomic number increases.
  • B
    Ionization enthalpy depends on the type of orbital from which the electron is removed.
  • C
    Generally,electron gain enthalpy decreases down a group.
  • D
    Up to group $14$,the ratio of charge to size remains approximately the same for elements of the second and third periods due to diagonal relationship.

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Similar Questions

Choose the correct statement.

Arrange the elements $N$,$P$,$O$,and $S$ in the order of:
$(i)$ Increasing first ionisation enthalpy.
$(ii)$ Increasing non-metallic character.
Give reasons for the arrangement assigned.

Match the column-$I$ with column-$II$
$A. S \rightarrow S^{-}$ $P. \text{Endothermic process}$
$B. N^{-} \rightarrow N$ $Q. \text{Exothermic process}$
$C. O^{-} \rightarrow O^{2-}$ $R. \text{Inert gas configuration in product}$
$D. P \rightarrow P^{-}$ $S. \text{Half filled configuration in product}$
Correct match is $:-$

Use the periodic table to answer the following questions.
$(a)$ Identify an element with five electrons in the outer subshell.
$(b)$ Identify an element that would tend to lose two electrons.
$(c)$ Identify an element that would tend to gain two electrons.
$(d)$ Identify the group having metal,non-metal,liquid as well as gas at room temperature.

As we go from left to right in period $2$ of the periodic table,the gram atomic volume of the elements:

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