Which of the following elements would produce coloured ions in aqueous solution?
A. Calcium B. lron C. Magnesium D. Sodium Correct Answer: Option B B. lronAn element with the electron configuration of 1s² 2s² 2p6 would have a combining power of?
A. o B. 2 C. 6 D. 8 Correct Answer: Option A A. oHow many isotopes has hydrogen?
A. 2 B. 3 C. 4 D. 5 Correct Answer: Option B B. 3Which of the following electrons configurations correctly represents an inert element?
A. 1s² 2s² 2p4 B. 1s² 2s² 2p6 3s² C. 1s2 2s² 2p6 3s² 3p4 D. 1s² 2s² 2p6 Correct Answer: Option D D. 1s² 2s² 2p6Products
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