Question

one of the important development which contributes significantly in the formulation of the quantum mechanical model of the atom is :
● Heisenberg uncertainty principle
● both a and b
● none of above
● photoelectric effect​

Answer 1

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photoelectric effect

Answer 2

Answer:

Although Bohr's model of the atom is the most commonly used model, scientists continued to develop new and improved models for the atom. Two concepts that contributed significantly to the development of improved models were – the Dual behaviour of matter and the Heisenberg uncertainty principle.

Explanation: