Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
MediumConsider the following:
$(I)$ The order of first ionisation enthalpy of the first three elements of the $3^{rd}$ period is $Mg > Al > Na$
$(II)$ The element with an electronegativity of $3.5$ is chlorine
$(III)$ The order of sizes of ions $Mg^{2+}, Na^{+}, F^{-}$ and $O^{2-}$ is $Mg^{2+} < Na^{+} < F^{-} < O^{2-}$
$(IV)$ The $IUPAC$ name of the element with atomic number $106$ is Bohrium.
The correct statements are
$(I)$ The order of first ionisation enthalpy of the first three elements of the $3^{rd}$ period is $Mg > Al > Na$
$(II)$ The element with an electronegativity of $3.5$ is chlorine
$(III)$ The order of sizes of ions $Mg^{2+}, Na^{+}, F^{-}$ and $O^{2-}$ is $Mg^{2+} < Na^{+} < F^{-} < O^{2-}$
$(IV)$ The $IUPAC$ name of the element with atomic number $106$ is Bohrium.
The correct statements are
- A$I$ & $II$ only
- B$II$ & $III$ only
- C$I$ & $III$ only
- D$II$ & $IV$ only
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Similar Questions
Match the following columns:
Column-$I$ Column-$II$ $A$. Ionisation potential $P$. $O < F < N$ $B$. Electronegativity $Q$. $N < O < F$ $C$. $Z_{eff}$ $R$. $O < N < F$ $D$. Electron affinity $S$. $N < C < O$
| Column-$I$ | Column-$II$ |
| $A$. Ionisation potential | $P$. $O < F < N$ |
| $B$. Electronegativity | $Q$. $N < O < F$ |
| $C$. $Z_{eff}$ | $R$. $O < N < F$ |
| $D$. Electron affinity | $S$. $N < C < O$ |
The number of the following pairs of elements which exhibit a diagonal relationship is:
$1. B \text{ and } Si$
$2. Be \text{ and } Al$
$3. Li \text{ and } Mg$
$4. Al \text{ and } S$
$1. B \text{ and } Si$
$2. Be \text{ and } Al$
$3. Li \text{ and } Mg$
$4. Al \text{ and } S$
State whether the following statements are true or false:
$(i)$ As the atomic number increases in a period,the nuclear charge increases,therefore the ionization enthalpy increases.
$(ii)$ As the metallic character of elements increases,the atomic radius generally increases.
$(iii)$ $Mn$ $(Z = 25)$ is a transition element. Although it is a $3d$-orbital element,its position in the periodic table is in the $4^{th}$ period.
$(i)$ As the atomic number increases in a period,the nuclear charge increases,therefore the ionization enthalpy increases.
$(ii)$ As the metallic character of elements increases,the atomic radius generally increases.
$(iii)$ $Mn$ $(Z = 25)$ is a transition element. Although it is a $3d$-orbital element,its position in the periodic table is in the $4^{th}$ period.
Medium
View SolutionWhich of the following pairs shows opposite trends when moving from left to right in a period and from top to bottom in a group?
Easy
View SolutionWhich of the following is the correct order of $I.E.$ (Ionization Energy)?
Difficult
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