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प्रश्न
State the number of elements in Period 3 of the Periodic Table.
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उत्तर
Period 3 is a short period that has 8 elements.
संबंधित प्रश्न
Is it possible to have an element having atomic number 1.5 placed between hydrogen and helium?
Consider the following elements:
Ca, Cl, Na, I, Li, Ba, Sr, K, Br
Separate these elements into three groups (families) of similar properties. State one property in each case on the basis of which you have made your choice.
Explain why All the elements of a period have different chemical properties.
Give the group number of following elements present in periodic table
An element barium has the atomic number 56. Look up its position in the periodic table and answer the following question.
Is it larger or smaller than caesium (Cs)?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
Give the symbol and valency of the following element and radical.
Nitrogen [Nitride]
The longest period of the Modern Periodic Table is period.
Noble gases are placed in the ______ group in the modern periodic table.
