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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SECTION B QUESTION 3 3.1.1. Oxygen: O 3.1.2. Nitrogen: N 3.2.1. Is a non-metal in group 1: Hydrogen 3.2.2. Is represented by the symbol Na: Sodium 3.2.3. It has six protons in a nucleus of one atom: Carbon 3.2.4. It is a noble gas in period 2: Neon 3.2.5. It is in group 2 period 3: Magnesium 3.3. a) Sodium Chloride: Sodium chloride (NaCl) is composed of sodium atoms (Na) and chlorine atoms (Cl). You would recover 2 different atoms. 3.4. Draw the labelled atomic structure with three protons, four neutrons and three electrons. This describes a Lithium atom. The nucleus contains 3 protons (positively charged) and 4 neutrons (no charge). The 3 electrons (negatively charged) orbit the nucleus in electron shells. The first electron shell holds 2 electrons, and the second electron shell holds 1 electron. A description of the drawing: Draw a central circle representing the nucleus. Inside, label "3 Protons" and "4 Neutrons". Draw a smaller circle around the nucleus representing the first electron shell. On this circle, draw and label "2 Electrons". Draw a larger circle around the first shell representing the second electron shell. On this circle, draw and label "1 Electron". QUESTION 4 4.1. Which diagram A, B or C represents a diatomic molecule? Give a reason for your answer. A. Reason: Diagram A shows individual units, each consisting of two identical atoms chemically bonded together. This is the definition of a diatomic molecule. That's 2 down. 3 left today — send the next one.