Among the following the maximum covalent character is shown by the compound
(1)MgCl2
(2)FeCl2
(3)SnCl2
(4) AlCl3
According to Fajans rule, cation with greater charge and smaller size favours covalency.
In the modern periodic table, which of the two periods contain 8 elements each?
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Washing soda is used ______.
I. for removing permanent hardness of water
II. for disinfecting drinking water
III. as a cleaning agent for domestic purpose
Elements having same atomic numbers but different mass number are called ______.
An electron loses potential energy when it
Lime water becomes white due to which gas?
What is the position of metallic ion and non-metallic ion in a chemical formula?
____ is the most electropositive and ___ is the most electronegative element of the third period of modern periodic table.
____ are atoms/molecules/ions containing the same number of electrons.
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