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1: Consult an aufbau diagram. How many electrons would make the d shell complete?

A1
B2
C6
D10
  1. Consult the periodic table. An electrically neutral atom has the following electron configuration: 1s^22s^22p^63s^23p^4. What is the name of this atom?
Asulfur B. phosphorus C. chlorine D. selenium

Verified Answer :

antonsandiego

The answer for the first question is definitely D. 10, as it is a neutral atom, therefore numbers of p+ and e- are the same.
\(s-p-d-f is 2-6-10-14\)
What about the next one, the answer is A. sulfur. 
I am pretty sure that these answers are correct, you will definitely find them useful.

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