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An element has the electron configuration 1s22s22p63s23p64s23d10. If the element forms an ion, what is its charge? a) +1b) +2c) -2d) -6 e) 0, no ion is possible

When a pure solid substance was heated, a student obtained another solid and a gas, each of which was a pure substance. From this information which of the following statements is ALWAYS a correct conclusion? a. both products are elements b. both products are compounds c. the original solid is...