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Q.

Which of the following statements is incorrect?

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a

The concepts of "peneration" and "shielding" are important in deciding the energetic ordering of orbitals in multi-electron atoms

b

wave-function can have positive and negative values

c

"Radial nodes" can appear in radial probability distribution functions

d

The shape of an orbital is given by the principal quantum number.

answer is D.

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Detailed Solution

  • The principal quantum number 'n' represents orbit number hence, determine the size of orbitals. The principal quantum numbers are represented by the letters 'K, L, M, N' or equal to 1, 2, 3, 4, etc.
  • The maximum number of electrons that can accommodate in a principal energy shell is given by 2n2.
  • it doesn't  gives the shape of orbital
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