Chem Review: Sec 4.1-4.3

The idea of arranging the elements in a table according to their chemical and physical properties is attributed to

• Newlands.

• Moseley.

• Bohr.

• Ramsay.

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From gaps in his table, Mendeleev predicted the existence of several elements and their

• atomic numbers.

• colors.

• properties.

• radioactivity.

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Mendeleev is credited with developing the first successful

• periodic table.

• method for determining atomic number.

• test for radioactivity.

• use of X rays.

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The principle that states that the physical and chemical properties of the elements are periodic functions of their atomic numbers is

• the periodic table.

• the periodic law.

• the law of properties.

• Mendeleev’s law.

Elements in a group or column in the periodic table can be expected to have similar

• atomic masses.

• atomic numbers.

• numbers of neutrons.

• properties.

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The atomic number of sodium, the first element in Period 3, is 11. The atomic number of the second element in this period is

• 3.

• 10.

• 12.

• 18.

An element that has an electron configuration of [Ne]3s²3p³ is in Group _____ of the periodic table.

• 2

• 3

• 6

• 15

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To which group of the periodic table do lithium and potassium belong?

• alkali metals

• transition metals

• halogens

• noble gases

To which group of the periodic table do fluorine and chlorine belong?

• alkaline-earth metals

• transition elements

• halogens

• actinides

The outer electron configuration of an alkali metal has

• 1 electron in the s orbital.

• 2 electrons in the s orbital.

• 1 electron in the p orbital.

• 2 electrons in the p orbital.

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