Class 11ChemistryClassification of Elements and Periodicity in PropertiesExtended or long form of periodic table
EasyWrite the atomic number of the element present in the third period and seventeenth group of the periodic table.
(17) The $1^{st}$ period contains $2$ elements and the $2^{nd}$ period contains $8$ elements. The $3^{rd}$ period begins after the $2^{nd}$ period,starting with the element having atomic number $Z = 11$. The $3^{rd}$ period contains $8$ elements,ending at $Z = 18$ (which is in the $18^{th}$ group). Therefore,the element in the $17^{th}$ group of the $3^{rd}$ period has an atomic number of $Z = 17$.
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Similar Questions
An element has $[Ar] 3d^1$ configuration in its $+2$ oxidation state. Its position in the periodic table is
The symbol of an element is $Une$. Its atomic number is
Match the following:
List-$I$ (Atomic number)
List-$II$ (Group number and Period number)
$A$. $56$
$I$. $9, 4$
$B$. $50$
$II$. $3, 6$
$C$. $27$
$III$. $14, 5$
$D$. $58$
$IV$. $2, 6$
| List-$I$ (Atomic number) | List-$II$ (Group number and Period number) |
|---|---|
| $A$. $56$ | $I$. $9, 4$ |
| $B$. $50$ | $II$. $3, 6$ |
| $C$. $27$ | $III$. $14, 5$ |
| $D$. $58$ | $IV$. $2, 6$ |
The number of elements present in the fifth period is
Medium
View SolutionExplain the nomenclature of elements having an atomic number greater than $100$.
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