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The uncertainity found from the uncertainity principle (Δx.Δp = h / 4π) is
The number of orbitals in any shell (n) is equal to
The maximum number of 4f electrons having spin quantum number (-1/2) is
The number of unpaired electrons in Cu+ (Z= 29) is
The electrons present in K-shell of the atom will differ in
Directions For Questions
Consider the following statements. The d-orbitals have
I. four lobes and two nodes
II. four lobes and one node
III. same sign in the opposite lobes
IV. opposite sign in the opposite lobes
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Which of the above statements are correct ?
Which of the following substances has the lowest boiling point?
Which of the following is solid with highest melting point ?
Out of the two compounds shown below, the vapour pressure of B at a particular temperature is expected to be
In which of the following molecules, the central atom does not have sp3 hybridisation?
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Un-answered - 10