Among the main-group elements the number of semimetals is
A) five.
B) six.
C) seven.
D) eight.
Correct Answer:
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Q7: Which of the following are properties not
Q8: As one traverses the periodic table from
Q9: Which is not a chemical reaction of
Q10: Which alkali metal reacts with nitrogen to
Q11: The alkali metals Li and Na are
Q13: Atomic radius of main-group elements generally
A)increases from
Q14: Hydrogen,H2,has a very low boiling point.What is
Q15: Metallic character for the main group elements
Q16: Ionization energy of main-group elements generally
A)increases from
Q17: Covalent hydrides of the type MH3 are
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