Advertisements
Advertisements
प्रश्न
Given alongside is a part of the periodic table. As we move vertically downward from Li to fr?
Li | Be |
Na | |
K | |
Rb | |
Cs | |
Fr | |
rA | Ra |
What happens to the size of atoms?
उत्तर
The size of the atom increases.
APPEARS IN
संबंधित प्रश्न
In terms of electronic configurations, explain the variation in the size of the atoms of the elements belonging to the same period and same group ?
Name two properties of elements whose magnitudes change when going from top to bottom in a group of the periodic table. In what manner do they change?
An element X belong to 3rd periods and group II of the periodic table state:
the number of valence electrons,
An element 'X' (Atomic number – 20) burns in the presence of oxygen to form a basic oxide.
(a) Identify the element and write its electronic configuration.
(b) State its group number and period number in the Modern Periodic Table.
(c) Write a balanced chemical equation for the reaction when this oxide is dissolved in water.
An element 'M' has atomic number 12.
(a) Write its electronic configuration.
(b) State the group to which 'M' belongs.
(c) Is 'M' a metal or a non-metal.
(d) Write the formula of its chloride.
Select the correct answer
Number of shells in potassium are
Element P has atomic number 19. To which group and period, does P belong? Is it a metal or a non-metal? Why?
Name and state the following with reference to the elements of the first three periods of the periodic table.
Non-metallic elements present in Period 3 of Groups 15 and 16.
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.
Select the correct answer from the options given below.
Is the group number of the element whose atomic number is 4.