Class 11ChemistryClassification of Elements and Periodicity in PropertiesMix Examples - Classification of Elements and Periodicity in Properties
DifficultWhich of the following statements are correct?
$(i)$ First ionisation enthalpy of $He < $ Second ionisation enthalpy of $Li$.
$(ii)$ $Li$ has the highest second ionisation enthalpy.
$(iii)$ All $d$-block elements are transition elements.
$(iv)$ The only alphabet not found in the periodic table is the letter '$J$'.
$(v)$ Francium concentration is $\sim 10^{-18} \ ppm$ on Earth.
$(i)$ First ionisation enthalpy of $He < $ Second ionisation enthalpy of $Li$.
$(ii)$ $Li$ has the highest second ionisation enthalpy.
$(iii)$ All $d$-block elements are transition elements.
$(iv)$ The only alphabet not found in the periodic table is the letter '$J$'.
$(v)$ Francium concentration is $\sim 10^{-18} \ ppm$ on Earth.
- A$(i), (ii), (iv)$
- B$(i), (ii), (iv), (v)$
- C$(i), (ii), (v)$
- D$(iv), (v)$
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Similar Questions
Which of the following statements is incorrect?
Medium
View SolutionThe set of elements that differ in mutual relationship from those of the other sets is:
Which of the following statements are not correct?
$A.$ The electron gain enthalpy of $F$ is more negative than that of $Cl$.
$B.$ Ionization enthalpy decreases in a group of the periodic table.
$C.$ The electronegativity of an atom depends upon the atoms bonded to it.
$D.$ $Al_2O_3$ and $NO$ are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:
$A.$ The electron gain enthalpy of $F$ is more negative than that of $Cl$.
$B.$ Ionization enthalpy decreases in a group of the periodic table.
$C.$ The electronegativity of an atom depends upon the atoms bonded to it.
$D.$ $Al_2O_3$ and $NO$ are examples of amphoteric oxides.
Choose the most appropriate answer from the options given below:
Which of these does not reflect the periodicity of the elements?
Easy
View SolutionAssign true $(T)$ or false $(F)$ for the following statements and select the correct option for your answer:
$(I)$ $I.P.$ of $O_{(g)}$ is less than $I.P.$ of $O^{-}_{(g)}$
$(II)$ $I.P.$ of $Ne_{(g)}$ is greater than $I.P.$ of $Ne^{+}_{(g)}$
$(III)$ $E.A.$ of $O^{+}_{(g)}$ is greater than $E.A.$ of $O_{(g)}$
$(IV)$ $I.P.$ of $N_{(g)}$ is greater than $I.P.$ of $N^{+}_{(g)}$
$(I)$ $I.P.$ of $O_{(g)}$ is less than $I.P.$ of $O^{-}_{(g)}$
$(II)$ $I.P.$ of $Ne_{(g)}$ is greater than $I.P.$ of $Ne^{+}_{(g)}$
$(III)$ $E.A.$ of $O^{+}_{(g)}$ is greater than $E.A.$ of $O_{(g)}$
$(IV)$ $I.P.$ of $N_{(g)}$ is greater than $I.P.$ of $N^{+}_{(g)}$
Difficult
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