A. K>Na>Li B. Be>Mg>Ca C. B>C>N D. Ge>Si>C
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A. 7,15 B. 6,12 C. 9,17 D. 3,12
A. Increase down the group B. Decrease down the group C. Remains unchanged D. The variations is not regular
A. O B. N C. C D. S
A. Li B. Al C. Si D. Mg
A. Energy bond B. Valence bond C. Conduction bond D. None of these
A. Glass B. Sugar C. Diamond D. None of these
A. Anisotropic B. Isotropic C. Both A and B D. None of these
A. Slow B. Fast C. Stationary D. Thermal
A. Atom bomb B. Hydrogen bomb C. Both D. None of these