Which of the following is the third member of the Dobereiner triad, that also features Lithium and Sodium?
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Which of the following elements has the lowest melting point?
The atoms of the elements having same difference between mass number and atomic number are called ______.
The element with the highest electron affinity among halogens is
The Chemical formula of Ammonium oxalate is _____.
Which among the following is false about natural rubber?
Which of the following are highly compressible?