The periodic trend of chemical reactivity for alkali metals and halogens is described in the following statements. Which statement provides the correct concept?
- AReactivity decreases in alkali metals,but it increases in halogens with an increase in atomic number down the group.
- BReactivity decreases in both alkali metals and halogens with an increase in atomic number down the group.
- CReactivity increases in both alkali metals and halogens with an increase in atomic number down the group.
- DReactivity increases in alkali metals,but it decreases in halogens with an increase in atomic number down the group.
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Similar Questions
The acidic,basic and amphoteric oxides,respectively,are
Statement $I :$ Acid strength increases in the order given as $HF < HCl < HBr < HI$.
Statement $II :$ As the size of the elements $F, Cl, Br, I$ increases down the group,the bond strength of $HF, HCl, HBr$ and $HI$ decreases and so the acid strength increases.
In the light of the above statements,choose the correct answer from the options given below.
Statement $II :$ As the size of the elements $F, Cl, Br, I$ increases down the group,the bond strength of $HF, HCl, HBr$ and $HI$ decreases and so the acid strength increases.
In the light of the above statements,choose the correct answer from the options given below.
How many elements in the periodic table are gases? Provide their positions in the periodic table.
Medium
View SolutionAll the elements in a group in the periodic table have the same
Easy
View SolutionGiven below are two statements:
Statement $I$: The number of pairs among $[Al_2O_3, Cr_2O_3]$, $[Cl_2O_7, Mn_2O_7]$, $[Na_2O, V_2O_3]$ and $[CO, N_2O]$ that contain oxides of same nature (acidic, basic, neutral or amphoteric) is $4$.
Statement $II$: Among $Na_2O, Al_2O_3, CO$ and $Cl_2O_7$, the most basic and acidic oxides are $Na_2O$ and $Cl_2O_7$, respectively.
Statement $I$: The number of pairs among $[Al_2O_3, Cr_2O_3]$, $[Cl_2O_7, Mn_2O_7]$, $[Na_2O, V_2O_3]$ and $[CO, N_2O]$ that contain oxides of same nature (acidic, basic, neutral or amphoteric) is $4$.
Statement $II$: Among $Na_2O, Al_2O_3, CO$ and $Cl_2O_7$, the most basic and acidic oxides are $Na_2O$ and $Cl_2O_7$, respectively.
DifficultJEE MAIN 2026
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