Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
EasyWhich of the following statements about the Modern Periodic Table is correct?
- AIt has $18$ vertical columns known as groups.
- BIt has $7$ vertical columns known as periods.
- CIt has $18$ horizontal rows known as periods.
- DIt has $7$ horizontal rows known as groups.
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Similar Questions
Which of the following elements would form anions? Why?
$(i)$ $Na$ $(ii)$ $O$ $(iii)$ $Mg$ $(iv)$ $Al$ $(v)$ $Cl$
$(i)$ $Na$ $(ii)$ $O$ $(iii)$ $Mg$ $(iv)$ $Al$ $(v)$ $Cl$
Medium
View SolutionArrange the following metals in decreasing order of their atomic size: $Ca, Mg, Ba, Be$.
Easy
View SolutionTaking the example of an element of atomic number $16$, explain how the electronic configuration of the atom of an element relates to its position in the modern periodic table and how valency of an element is calculated on the basis of its atomic number.
Medium
View SolutionArrange the following elements in the order of their increasing non-metallic character: $Li, O, C, Be, F$.
Medium
View SolutionState whether the following statement is true or false: $Na, Mg, Li, Al, Si, F, P$ and $Cl$ belong to the third period of the Modern periodic table.
Easy
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