CSEC Chemistry · May/June 2016 · Paper 1 · Question Q2
The arrangements of electrons in atoms of X and Y are 2, 8, 5 and 2, 8, 6 respectively. Which of the following represents X and Y? | | X | Y | |---|---|---| | (A) | Metal | Non-metal | | (B) | Non-metal | Non-metal | | (C) | Non-metal | Metal | | (D) | Metal | Metal |
- (A)X: Metal; Y: Non-metal
- (B)X: Non-metal; Y: Non-metal
- (C)X: Non-metal; Y: Metal
- (D)X: Metal; Y: Metal
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