The correct answer is b. al, mg, li
That's because Cobalt is not a representative element since it's not found in the first 2 or the last 6 groups.
Answer:
Golding's experience teaching unruly young boys would later serve as inspiration for his novel Lord of the Flies. Although passionate about teaching from day one, in 1940 Golding temporarily abandoned the profession to join the Royal Navy and fight in World War II.
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