The element with atomic number $55$ belongs to
- A$s$-block
- B$p$-block
- C$d$-block
- D$f$-block
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Give any two uses of washing soda.
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View SolutionMatch List-$I$ with List-$II$:
List-$I$ List-$II$ $(a)$ $Li$ $(i)$ photoelectric cell $(b)$ $Na$ $(ii)$ absorbent of $CO_{2}$ $(c)$ $K$ $(iii)$ coolant in fast breeder nuclear reactor $(d)$ $Cs$ $(iv)$ treatment of cancer $(v)$ bearings for motor engines
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $(a)$ $Li$ | $(i)$ photoelectric cell |
| $(b)$ $Na$ | $(ii)$ absorbent of $CO_{2}$ |
| $(c)$ $K$ | $(iii)$ coolant in fast breeder nuclear reactor |
| $(d)$ $Cs$ | $(iv)$ treatment of cancer |
| $(v)$ bearings for motor engines |
Choose the correct answer from the options given below:
DifficultJEE MAIN 2021
View SolutionHow does the ionization energy of elements in Group $1$ change as we move down the group?
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View SolutionWhich one on reaction with $NaOH$ solution gives inflammable gas?
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View SolutionIn the case of alkali metals,the covalent character decreases in the order
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