Exam (elaborations)
PToE(questions with verified solutions)
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PToE(questions with verified solutions)
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PToEnoble gases - correct answer ✔✔Group 18: Nonreactive family of nonmetals; 8 valence e- (full octet). All
are gases at room temp and are extremely unreactive
valence electrons - correct answer ✔✔Electrons on the outermost energy level of an atom
element symbol - correct answer ✔✔the abbreviation of an elements name; 1 or 2 letters, first letter is
always capitalized, second is never capitalized
atomic mass - correct answer ✔✔total weight of protons and neutrons
atomic number - correct answer ✔✔The number of protons in an atom which uniquely identifies an
element
Bohr diagram - correct answer ✔✔a diagram of an atom which includes all protons, neutrons, electron
shells, and electrons
7 - correct answer ✔✔Number of periods in the periodic table
18 - correct answer ✔✔Number of groups/families on the periodic table
periodic law - correct answer ✔✔the law that states that the repeating chemical and physical properties
of elements change periodically with the atomic numbers of the elements
metal - correct answer ✔✔Elements that are good conductors of heat and electric current.
alkaline earth metals - correct answer ✔✔group 2 elements not as reactive as group 1
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