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.
Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?
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Which of the following elements has the lowest melting point?
The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 3rd group and the 4th period?
Alpha particles are ___________.
Fe has 26 protons in its nucleus. What are the number of electrons in Fe2+ (II) ion?
The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.
Chemical formula for sulphurous acid is:
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