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12 Cards in this Set
- Front
- Back
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In a modern periodic table, elements are arranged in order of?
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In a modern periodic table, the elements are arranged in an increasing order.
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How many periods does the modern periodic table have?
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The amount of periods that the modern periodic table has is 7.
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An element that is shiny and conducts electricity is likely to be a?
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An element that is shiny and conducts electricity is likely to be an electrical current.
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Elements that have the same number of valence electrons are:
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Elements that have the same number of valence electrons are located in a group.
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What is the octet rule?
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Its a statement that when atoms combine to form molecules they generally each lose, gain, or share valence electrons until they attain or share eight.
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What do all nonmetals have in common?
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Nonmetals dont conduct heat or electricity too good.
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Which class on the periodic table shares properties with both metals and nonmetals?
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Metalloids.
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Using your periodic table and your knowledge of the relationship between group and number of valence electrons, how many valence electrons would Magnesium have?
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Magnesium has 2 valence electrons.
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Which of the following elements is a metalloid? a. copper b. indium c.silicon d. carbon
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Silicon.
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. Using your periodic table and your knowledge of the relationship between period and number of electron energy levels, how many energy levels does strontium have?
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Strontium has 5 energy levels.
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Use your periodic table to look up the atomic number and atomic mass of Boron. How many protons does Boron have?
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Boron has 5 protons.
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What is a cation?
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A cation is a positively charged ion.
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