Periodic Table and Elements

Front

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

Back

Newlands

Front

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

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Atomic numbers

Front

Mendeleev is credited with developing the first successful

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Periodic table

Front

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

Back

The periodic law

Front

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

Back

Properties

Front

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

Back

12 (Magnesium)

Front

An element that has an electron configuration of [Ne]3s²3p³ is in Group

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Phosphorus (15)

Front

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

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Alkali metals

Front

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

Back

Halogens

Front

The outer electron configuration of an alkali metal has

Back

1 electron in the s orbital