Difficult
Among the following,the least and most metallic elements will be respectively:
$(I) [He] 2s^1$
$(II) [Kr] 5s^2 4d^{10} 5p^5$
$(III) [Xe] 6s^1$
$(IV) [He] 2s^2 2p^5$
$(I) [He] 2s^1$
$(II) [Kr] 5s^2 4d^{10} 5p^5$
$(III) [Xe] 6s^1$
$(IV) [He] 2s^2 2p^5$
- A$I$ and $II$
- B$II$ and $IV$
- C$III$ and $IV$
- D$IV$ and $III$
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Similar Questions
The reactivity of the following compounds toward water is in the order:
Match the following:
Oxide Nature $a$. $CO$ $i$. Basic $b$. $BaO$ $ii$. Neutral $c$. $Al_2O_3$ $iii$. Acidic $d$. $Cl_2O_7$ $iv$. Amphoteric
Which of the following is the correct option?
| Oxide | Nature |
|---|---|
| $a$. $CO$ | $i$. Basic |
| $b$. $BaO$ | $ii$. Neutral |
| $c$. $Al_2O_3$ | $iii$. Acidic |
| $d$. $Cl_2O_7$ | $iv$. Amphoteric |
Which of the following is the correct option?
MediumNEET 2020
View SolutionIn the modern periodic table,the acidic nature of oxides:
Explain the periodic properties of elements and their reactivity trends in the periodic table.
Difficult
View SolutionIf the valence shell electronic configuration for an element is $ns^2 np^5$,this element will belong to the group of
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