dat 2007 errors?

[skim1988]

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67. The electronic configuration of a particular neutral atom is
1s2 2s2 2p6 3s2 3p2. What is the number of unpaired electrons in this atom?

Answer key says 3 but isn't it 2?

 

[skim1988]

13. Which is the smallest organelle in the cell?

Answer key says ribosome but ribosome isn't an organelle right? because prokaryotes have ribosomes and prokaryotes don't have any organelles.

 

[herkulease]

the only error is the electron config question.

a ribosome is an organelle. prokaryotes lack membrane-bound organelles not just organelles.

 

[skim1988]

cool thanks!