Chapter 7 - Chapter 7 1 Elements D E and G have atomic...

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Chapter 7 1. Elements D, E, and G have atomic numbers Z, Z+1, and Z+2 respectively. E is a noble gas (not helium). Which statement is true? A. Elements D and G should form a compound which is a gas at room temperature and which has formula GD. B. Elements D and G should form a compound which is a solid at room temperature with formula GD. C. Elements D and G should not react with each other. D. Elements D and G should react to form a covalent compound with formula DG 7 . E. None of the above is a true statement. 2. Atom X is in Group IIA and atom Y is in Group VIIA. A compound formed between these two elements would have the formula 3. Which of the following has the configuration of a noble gas? 1. S 2+ 2. Br 3. Si 4+
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