All elements with an atomic number greater than what number are unstable?
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What is the principle of superposition?
Explain the difference between the atomic theory and the kinetic theory?
What is different between secondary electron image and back scattered electron image?
Why dies the liquid not come out of the dropper, unless the rubber id Pressed ?
Why does the reflection of objects seen on a cheap looking glass give distorted images ?
what is the name of the device that is made by combining two basic types of solid state rectifiers allowing the device to both rectify and amplify a current?
If a body is hung from a spring balance first at the poles and then at the Equator, why do the readings of the balance change ?
WHY DO FLAME GOES UP IN DIRECTION
How much should be the minimum size of the ordinary mirror, so that and observer standing at the centre of room is able to see the whole of the height of the wall behind him ?
What does hull speed mean?
Explain the Hygrometers ?
What is an electron?