11. an element is in group 15. the last electron added to an atom of this element will be in a(n) __ sublevel.
A. s B. p C. d D. f
12. an atom is in group 2, period 3. how many electrons does the atom contain?
A. 2 B. 3 C. 5 D. 12
13. which is a possible last sublevel for an element found in group 18?
A. 3p6 B. 4s2 C. 4p3 D. 4d8
14. an element is most likely to have properties similar to those of __.
A. another element in the same period
B. another element in the same group
C. a noble gas
D. a transition element
15. transition elements have final electrons in the __ sublevel.
A. s B. p C. d D. f
16. what are the valence electrons in the electron configuration of tin, [Kr] 4d105s25p2?
A. [Kr] B. 4d10 C. 5s25p2 D. 5p2
17. each row in the periodic table ends with a __.
A. metal B. nonmetal C. metalloid D. noble gas
2007-09-27
05:31:35
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1 answers
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asked by
Anonymous
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Science & Mathematics
➔ Chemistry