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1) Paramagnetic behaviour of an atom, ion or molecule is due to the presence of

2) The total number of unpaired electrons in an atom of atomic number 24 when it carries a +3 charge

3) The melting and boiling point of silicon is highest in the 3rd period. This is because of

4) Which of the following process is endothermic?

5) When one mole of aluminium is reacted with excess steam, it produces a mole of hydrogen gas.

6) Which of the following is correct regarding the IA elements in the group?

7) Which of the following group has the highest electrical conductivity

8) Which property of alkaline earth metals decreases with the increase in atomic number

9) Which is the most stable electronic configuration of 1st transition series.

10) "X" compound absorbs yellow colour light, it will look like it

11) Which of the following transition element show only one oxidation state?

12) Which of the following is the correct decreasing order of basic character of alkali metal oxides?

13) II-A elements on reaction with oxygen produce their oxides and these oxides are very stable due to their.

14) Ionization energy increases from left to right. In which case the highest amount of energy is required to remove valence shell electrons.

15) The size of the atoms and ions go on decreasing in periods of s and p block elements because of

16) Choose the incorrect statement

17) How many non-metals are present in the s-block?

18) Which of the following has the highest binding energy?

19) Which of the following pair of elements shows the abnormal electronic configuration

20) Zn and Cd are non-typical transition elements and they belong to the _______ group.

21) In the case of melting points and boiling points which element will be present at the top of the graph

22) Which of the following element in reaction with oxygen produce ionic oxides?

23) How many s-orbital electrons are there in phosphorus?

24) The geometry of the complexes depends upon the type of _______ taking place in the
valence shell of the central metal atom.

25) Which of the following group elements are strong reducing agents?