Periodic Table Review

Front

What are alkali earth metals?

Back

Alkali earth metals are the elements found in Group 2 of the periodic table, which include Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra). They are known for being reactive and having two electrons in their outermost shell.

Front

Which element is in group 2, period 4?

Back

Calcium (Ca) is the element located in group 2, period 4 of the periodic table.

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table, known for their lack of reactivity due to having a full valence shell. Examples include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

Front

Which element belongs to the noble gas family?

Back

Radon (Rn) is an example of an element that belongs to the noble gas family.

Front

What is a nonmetal?

Back

Nonmetals are elements that typically lack the characteristics of metals. They are usually poor conductors of heat and electricity and can be gases, liquids, or solids at room temperature. Examples include Oxygen (O), Nitrogen (N), and Krypton (Kr).

Front

Which element is a nonmetal?

Back

Krypton (Kr) is an example of a nonmetal.

Front

What are rare earth metals?

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Rare earth metals are a group of 17 elements that include the 15 lanthanides plus Scandium (Sc) and Yttrium (Y). They are known for their unique magnetic, luminescent, and electrochemical properties.

Front

Which element belongs to the rare earth metals?

Back

Protactinium (Pa) is an example of an element that belongs to the rare earth metals.

Front

What is the significance of the periodic table?

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The periodic table organizes all known chemical elements based on their atomic number, electron configuration, and recurring chemical properties, allowing for the prediction of element behavior.

Front

What is the atomic number?

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The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity and its position in the periodic table.