Advertisements
Advertisements
प्रश्न
What happens to the metallic character of the elements as we go down in a group of the periodic table?
उत्तर
The metallic character of elements increases as we go down in a group of the periodic table.
APPEARS IN
संबंधित प्रश्न
The elements 4Be, 12Mg and 20Ca, each having two valence electrons in their valence shells, are in periods 2, 3 and 4 respectively of the modern periodic table. Answer the following questions associated with these elements, giving reason in each case:
(a) In which group should they be?
(b) Which one of them is least reactive?
(c) Which one of them has the largest atomic size?
Classify the following elements into metals, non-metals and metalliods
As, C, Hg, Mg, S, Si
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]
How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers?
What do you understand by periodicity?
State the trends in physical properties on moving down the group. Give an example to illustrate.
Write two reasons responsible for late discovery of noble gases ?
What is modern periodic law?
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of the element in period 3 having atomic number 17.
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 which is tetravalent.
