Question

atomic structure
7 periods/rows. the number of energy levels/shells contained in an atom of a specific element can be determined from the period/row number. for example, calcium (ca) belongs to period 4, so it contains 4 energy levels/shells.
all of the elements to the left of the \stair - step\ or \zigzag line\, with the exception of hydrogen (nonmetal), are considered to be metals. metals have several important properties that allow them to be identified. metals are typically shiny and are good conductors of heat and electricity. they are also malleable which means they are able to be bent or hammered into thin sheets without breaking or shattering (i.e. aluminum foil, gold and silver jewelry, and copper wiring). finally, metals are ductile which means they are able to be drawn or pulled into a wire (i.e. power lines, electrical cords, and speaker wire).
periodic table summary
summarize the information provided. your summary should include the following things.
how is the periodic table arranged?
what information do we know about elements in the same group?
what information do we know about elements in the same period?
where on the periodic table do we find metals, nonmetals, and metalloids?
what are at least 3 properties of metals?
what are at least 2 properties of nonmetals?
what do we know about the properties of metalloids?
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Explanation:

The reading provides information about the periodic table. Elements are arranged by periods (rows) which correspond to energy levels in an atom. Metals are on the left of the "stair - step" line (except hydrogen), and have properties like being conductors of heat and electricity, malleable, and ductile. Non - metals are on the right and have different properties. Elements in the same group have similar chemical properties, and elements in the same period have the same number of energy levels.

Answer:

The periodic table arranges elements by periods (rows) corresponding to energy levels. Metals, on the left of the "stair - step" line (except hydrogen), are conductors, malleable, and ductile. Non - metals have different properties. Elements in the same group have similar chemical properties, and those in the same period have the same number of energy levels.