Chemistry Exam Questions!!!! will pick best answer :D?

Question

18. in going from right to left in any given row in the periodic table, the size of atoms generally __.
A. increases B. decreases C. stays the same D. changes randomly

19. compared to the neutral atom from which it is derived, a negative ion is __.
A. always larger B. always smaller C. larger in some cases and smaller in others D. the same size

20. transition elements, such as chromium, are likely to have __.
A. an oxidation number of 1+
B. an oxidation number of 2+
C. multiple oxidation numbers
D. a negative oxidation number

21. a metallic ion is __ its corresponding atom.
A. larger than
B. smaller than
C. the same size
D. impossible to compare with

22. ionic radii __ down a group in the periodic table.
A. increase B. decrease C. stay the same D. follow no pattern

23.alkaline earth metals lose __ electrons to achieve the electron configuration of the noble gas in the preceding period.
A. one B. two C. six D. seven

Answer 1

B
A
C
B - most metallic ions are + ions (lose electrons out of most distant orbital, decreases size/diameter)
A
B

Answer 2

18. B
19. A
20. C
21. A?
22. A
23. B