Consider the following elements and their electronic configurations W: 1s 2 2s 2 X: 1s
CHEMISTRY
WAEC 2008
Consider the following elements and their electronic configurations W: 1s22s2 X: 1s22s22p6 Y: 1s22s22p63s2 Z: 1s22s22p63s23p2. Which of the elements belong to the same group in the periodic table?
- A. W and X only
- B. Y and Z only
- C. W and Y only
- D. W, Y and Z only
Correct Answer: C. W and Y only
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