The complete electron configuration of tellurium is A) 1s^22s^22p^63s^23p^64s^24

Question

The complete electron configuration of tellurium is A) 1s^22s^22p^63s^23p^64s^24p^65s^24d^105d^105p^6 B) 1s^22s^22p^63s^23p^64s^23d^104p^65s^24d^105d^105p^4 C) 1s^22s^2p^63s^23p^64s^23d^104p^65s^24d^105p^4 D) 1s^22s^22p^63s^23p^64s^23d^104d^104p^4 E) none of these Which of the following electron configurations is different from that exported? A) Ca B) V C) Cr D) Ti E) Se Nitrogen has five valence electrons. Consider the following electron arrangements. Which represents the ground state for N? A) option a B) option b C) option c D) option d E) option e An atom of fluorine contains nine electrons. How many of these electrons are in s orbitals? A) 2 B) 6 C) 8 D) 4 E) none

Explanation / Answer

14. Tellurium: Te Atomic number 52,

1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p4

Hence, answer will be non-of above. (E)

15. Chromium shows differnce in actual and expected electronic configuration:

24Cr: Actual : 1s2 2s2 2p6 3s2 3p6 3d5 4s1 (expected is: 1s2 2s2 2p6 3s2 3p6 3d4 4s2) Answer : (C)

16. Ground state electron configuration nitrogen: 7N : 1s2 2s2 2p3 Answer: (A: Option a)

17. 9F : 1s2 2s2 2p6 , So there are 2 electrons in each S orbital (total 4 electrons in two different s orbitals). (A)

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