This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
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1. a) i) Atomic number: The number of protons* in the nucleus of an atom. It defines the element. Isotopy: The phenomenon where atoms of the same element have the same number of protons but different numbers of neutrons*, resulting in different mass numbers. 1. a) ii) ^12_6X has 6 protons (atomic number = 6). ^14_7Y has 7 protons (atomic number = 7). For two atoms to be isotopes, they must have the same atomic number (same number of protons). Since X and Y have different atomic numbers, they are different elements and therefore not isotopes. 1. a) iii) For ^56_26Fe^2-: Atomic mass (A) = 56 Atomic number (Z) = 26 (number of protons) Number of neutrons = Atomic mass (A) - Atomic number (Z) Number of neutrons = 56 - 26 = 30 There are 30 neutrons in ^56_26Fe^2-. 1. b) i) For the reaction $N_2