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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
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
What are the periods in a periodic table? Give two characteristics of each.
Name two elements in each case:
Actinides
Write a short note.
Position of isotopes in the Mendeleev’s and the modern periodic table.
Give the chemical formula of carbonic acid
Complete the following flow chart.
The element which has the least tendency to lose electrons is ______
In the modern periodic table, elements are arranged according to their ______
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
