Saturday 21 July 2012

Explain liquid drop model of atomic nucleus.

Explain liquid drop model of atomic nucleus.
Explanation-
According to this model a necleus can be assumed to be like a liquid drop for the following reasons-
(i) The stable necleus is spherical in shape due to symmetrical surface tension forces.
(ii) Such as the surface tension forces act on thevsurface of the liquid-drop similarly a potential barrier to surface of the nucleus acts.
(iii) The nuclear force are short range forces. Similarly, in liquid drop, the intermolecular forces are short range forces.
(iv) The density of liquid drop is independent of its volume. Similarly the density of nucleus is independent of its volume.
(v) On rising the temprature of liquid the molecules evaporate. Similarly, when energy is given to the neucleus a compound nucleus is formed which emits nucleons almost immediately . 

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