Class 11ChemistryClassification of Elements and Periodicity in PropertiesExtended or long form of periodic table
EasyAn element with atomic number $20$ will be placed in which period of the periodic table?
- A$4$
- B$3$
- C$2$
- D$1$
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Similar Questions
The Modern Periodic Table is based on the atomic number. Explain this with a table.
Medium
View SolutionThe electronic configuration of the element which is just above the element with atomic number $43$ in the same periodic group is
Medium
View SolutionMatch the items in List-$A$ with the items in List-$B$ and select the correct option.
List-$A$ List-$B$ $(1)$ Atomic number: $101$ $(A)$ $IUPAC$ symbol: $Rf$ $(2)$ Atomic number: $104$ $(B)$ $IUPAC$ symbol: $No$ $(3)$ Atomic number: $116$ $(C)$ $IUPAC$ name: Mendelevium $(4)$ Atomic number: $109$ $(D)$ Name: $Unnilennium$ $(E)$ Symbol: $Lv$ $(F)$ $IUPAC$ name: $Meitnerium$
| List-$A$ | List-$B$ |
| $(1)$ Atomic number: $101$ | $(A)$ $IUPAC$ symbol: $Rf$ |
| $(2)$ Atomic number: $104$ | $(B)$ $IUPAC$ symbol: $No$ |
| $(3)$ Atomic number: $116$ | $(C)$ $IUPAC$ name: Mendelevium |
| $(4)$ Atomic number: $109$ | $(D)$ Name: $Unnilennium$ |
| $(E)$ Symbol: $Lv$ | |
| $(F)$ $IUPAC$ name: $Meitnerium$ |
Medium
View SolutionWhich elements are considered exceptions in the classification of the periodic table?
Difficult
View SolutionProve that according to quantum numbers,the $6^{th}$ period contains $32$ elements.
Medium
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