Class 11ChemistryClassification of Elements and Periodicity in PropertiesExtended or long form of periodic table
EasyWhat is the electronic configuration of the third element of group-$2$ in the periodic table?
- A$[Ne] 3s^1$
- B$[Ne] 3s^2$
- C$[Ar] 4s^1$
- D$[Ar] 4s^2$
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The fundamental basis of the present-day Periodic Table is that elements are
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Which period contains most of the man-made radioactive elements?
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View SolutionIdentify the incorrect match from the following table of elements with atomic number $Z > 100$ and their $IUPAC$ names:
Temporary Systematic Name $IUPAC$ Official Name $a$. Unnilunium $(101)$ $i$. Nobelium $(No)$ $b$. Unniltrium $(103)$ $ii$. Lawrencium $(Lr)$ $c$. Unnilhexium $(106)$ $iii$. Seaborgium $(Sg)$ $d$. Ununnilium $(110)$ $iv$. Darmstadtium $(Ds)$
| Temporary Systematic Name | $IUPAC$ Official Name |
|---|---|
| $a$. Unnilunium $(101)$ | $i$. Nobelium $(No)$ |
| $b$. Unniltrium $(103)$ | $ii$. Lawrencium $(Lr)$ |
| $c$. Unnilhexium $(106)$ | $iii$. Seaborgium $(Sg)$ |
| $d$. Ununnilium $(110)$ | $iv$. Darmstadtium $(Ds)$ |
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