Select the BEST answer.  A Se atom has a smaller atomic radius than a Ca atom because ___________. a.The original statement is FALSE.  Se has a larger atomic radius than Ca. b. The outermost electrons in Se are in a higher energy sublevel than the outermost electrons in Ca. c. The Se nucleus contains more protons than the Ca nucleus. d.The Se atom is heavier than the Ca atom. e. The Se atom has more core electrons than the Ca atom.

What is the maximum number of electrons that can be placed into each of the following. a. 1s orbital b. 2p orbital c. 2p subshell d. n=2 shell e. 3d subshell f. 4f subshell

Which of the following is the correct electron configuration of Mg2+? A.  1s22s22p6 B.  1s22s22p63s1 C.  1s22s22p63s2 D.  1s22s22p63s23p1

The element which has four valence electrons is ________.( A) H B) Na C) Mg D) Si E) S

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Ecological Footprin... Gizmo: Electron Configuration Fill-in View Insert Format Tools Extensions Help P 100% Y Normal text T + to the document will New Tab +Revenge Gardening... 鬼 EE 7 Arial Symbol Cr Cu Au Last edit was Q Search 11 + G HEHE nutes ago *** "I, Too" by Langsto... B I U A BIUA GO 99+ Im IL I D. The following elements also do not follow the diagonal rule. Predict their electron configurations and write your prediction. Check it with the Gizmo and put the actual configuration in the table. = + I Predicted Electron Config. Actual Electron Config. D N E-1E = E Y Y *** * * : □ □ 4x D A X Share A 9:53 PM 3/22/2023 *** > + 20 31 .. O .. O 1

What value is the closest estimate of Zeff for a valence electron of the calcium atom? A. 1 B. 2 Zeff = 20 protons - 18 core electrons = 2 C. 6 D. 20 E. 40

Classify each element as a halogen noble gas or either SHOW WORK A. NE B. BR C. S D. XE E. I