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प्रश्न
What is meant by a Group in the Periodic Table?
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उत्तर
The verticle columns from top to bottom are called groups.
संबंधित प्रश्न
List any two properties of the elements belonging to the first group of the modern periodic table.
Choose the most appropriate answer of the following:
Which of the following would weigh the least?
(A) 2-gram atoms of Nitrogen.
(B) 1mole of Silver
(C) 22.4 liters of oxygen gas at 1 atmospheric pressure and 273K
(D) 6.02 x 1023 atoms of carbon.
[Atomic masses: Ag=108, N=14, O=16, C=12]
Calculate the mass of Calcium that will contain the same number of the atom as are present in 3.2 gm of Sulphur.
[Atomic masses: S=32, Ca=40]
In each of the following pair, choose the atom having the bigger size:
(a) Mg (At. No.12) or Cl (At. No.17)
Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the element in question. DO NOT repeat an element. 
Which is an inert gas?
What is meant by periodicity of elements?
State whether the following statement is true or false
Similar electronic configuration is repeated after intervals of 2, 8, 8, 18 and 32.
Choose the most appropriate answer from the following list of oxides which fit the description.
An amphoteric oxide.
Based on the group valency of element write the molecular formula of the following compound giving justification:
Halide of the elements of group thirteen
Electron Affinity is maximum in ______.
