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1.
Which element of second period forms most acidic oxide?
2.
The electronic configuration of four elements are given below. Which element does not belong to the same family?
3.
For the four successive transition elements 
the stability of 
oxidation state will be there in which of the following order?
(At. no.
)
the stability of oxidation state will be there in which of the following order?(At. no.
)
4.
Which is correct in the following?
5.
The linear structure is possessed by:
6.
Which of the following has largest ionic radius?
7.
In the cyanide ion, the formal negative charge is on:
8.
The size of ionic species is correctly given in the order:
9.
Which statement is wrong?
10.
Which of the following atoms has minimum covalent radius?