MSC Grid 4 Test- Periodic Table

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What are Alkali Metals?

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Alkali Metals are a group of highly reactive elements found in Group 1 of the periodic table. They include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). Pure forms are stored in oil to prevent reactions with air and water.

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What is the significance of the 7th period in the periodic table?

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The 7th period contains elements that have similar properties to those in the 1st period. For example, Francium (Fr) is in the 7th period and shares properties with sodium (Na).

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Define 'family' in the context of the periodic table.

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A 'family' refers to a grouping of elements that share similar properties, arranged vertically in columns on the periodic table, also known as a group.

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What are Metalloids?

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Metalloids are elements that have properties of both metals and nonmetals. An example is Arsenic (As), which exhibits characteristics of both categories.

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What is the name of Group 17 in the periodic table?

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Group 17 is known as the Halogens, which includes elements like fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

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What are Noble Gases?

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Noble Gases are 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), and argon (Ar).

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What is the periodic trend for reactivity in Alkali Metals?

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Reactivity increases as you move down the group in Alkali Metals, with francium being the most reactive.

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What is the difference between a period and a group in the periodic table?

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A period is a horizontal row in the periodic table, while a group (or family) is a vertical column of elements that share similar properties.

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What are Alkaline-earth metals?

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Alkaline-earth metals are found in Group 2 of the periodic table and include beryllium (Be), magnesium (Mg), calcium (Ca), and others. They are less reactive than Alkali Metals.

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What is an isotope?

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An isotope is a variant of a chemical element that has the same number of protons but a different number of neutrons, resulting in a different atomic mass.