Question

In: Chemistry

Which of the following statements is TRUE? A. An orbital that penetrates into the region occupied...

Which of the following statements is TRUE?

A. An orbital that penetrates into the region occupied by core electrons is less shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy.

B. An orbital that penetrates into the region occupied by core electrons is more shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy.

C. It is possible for two electrons in the same atom to have identical values for all four quantum numbers.

D. Two electrons in the same orbital can have the same spin.

E. None of the above is true.

Solutions

Expert Solution

A. An orbital that penetrates into the region occupied by core electrons is less shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. THIS IS TRUE.

B. An orbital that penetrates into the region occupied by core electrons is more shielded from nuclear charge than an orbital that does not penetrate and therefore has a lower energy. Since A is true, this can't be true as well, since it is opposite as what is stated in A

C. It is possible for two electrons in the same atom to have identical values for all four quantum numbers.

FALSE, this is violating Pauli Exclusion principle, which states that EACH electron has its unique quantum number

D. Two electrons in the same orbital can have the same spin.

False, they can't have the same orbital AND same spin

E. None of the above is true.

False, A is actually true

queen_honey_blossom answered 2 years ago
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