1
IIT-JEE 1993
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+1
-0
The 2px, 2py and 2pz orbitals of atom have identical shapes but differ in their _____.
2
IIT-JEE 1988
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+1
-0
The uncertainty principle and the concept of wave nature of matter were proposed by ______ and ______ respectively. (Heisenberg Schrodinger, Maxwell, de Broglie)
3
IIT-JEE 1983
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+1
-0
Elements of the same mass number but of different atomic numbers are known as ____.
4
IIT-JEE 1982
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+1
-0
The mass of a hydrogen atom is ______ kg.
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