Advertisements
Advertisements
प्रश्न
Explain why, the noble gases are placed in a separate group.
उत्तर
Noble gases are placed in a separate group of the periodic table because they are inert elements. They are unreactive as their valence shells are completely filled with electrons. Their properties are different when compared to all the other elements.
APPEARS IN
संबंधित प्रश्न
How does the metallic character of elements in Modern Periodic Table vary on moving from left to right in a period, and (ii) down a group?Give reason to justify your answer.
State modern periodic law.
What is the significance of atomic number in the modern classification of elements? Explain with the help of an example.
What is the usual number of valence electrons in the atoms of the last element in a period?
What is the major characteristic of the first elements in the periods of the periodic table? What is the general name of such elements?
Give the group number of following elements present in periodic table
Answer the following question.
How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different elements?
State the number of elements in Period 1 of the Periodic Table.
How does the property vary in periods and in groups?
The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belong to the same group?
