교과서 질문
Give the names and symbols for the following elements:(a) An element with atomic number 6 (b) An element with 18 protons in its nucleus (c) An element with 23 electrons
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2. Atoms & Elements
Periodic Table: Element Symbols
1:26 minutesOpen Question
What are 1A, 3B, and 7A examples of on the periodic table?
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