a1s. whic h one of the following atoms is in order of increasing atomic radn Ue

Question

a1s. whic h one of the following atoms is in order of increasing atomic radn Ue from lowest to highest rodin? Q16. Which one of the following electron configurations obeys Hund's rule? 016 Q17. Which one of the following is the electron configuration for Cr? A. [Ar]4s 3d4 B. [Ar]4s'3d CAr4s'3dD with the 3py orbital in atoms Which one of the following orbitals is degenerate with many electrons? Q18. B. 3p C. 3dxy D. 3s A. 1s Q19. Which quantum number describes the size of the orbital? C. mi D. ms A. n B. Q0. Which one of the following atoms has the ground state electron configuratic C. Se D. Br B. I A. Te NE Q21. Wh at is the effective nuclear charge (Zet) of the sodium atom? C. +11 D. -10 A. +1 Q22. Which one of the following elements has the most negative electron a B. Li C. Be D. F A. Na

Explanation / Answer

15) answer: A (Left TO right in periods atomic radii decreases, due to increase in effective nuclear charge.)

16) answer:B

17) answer: C

18) answer: B

19) answer: A

20) answer: D

21) answer: A

22) answer: D

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