Periodic properties MCQs

The most non-metallic group among the following is ____.

Correct! Wrong!

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The most non-metallic group among the following is VIIA. VIIA group elements are halogens and all elements in this group are non-metallic.

In the periodic table rubidium and radium are present in groups ____ respectively.

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In the periodic table rubidium and radium are present in groups 1 and 2 respectively.

In a long form periodic table, the elements in a period are arranged according to the ____.

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In a long form periodic table, the elements in a period are arranged according to strict sequence of increase in atomic number.

____ belongs to the 2nd group of the periodic table.

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Be belongs to the 2nd group of the periodic table.

The electron affinity across the period increases from left to right.

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Electron affinity is the tendency of an atom to accept electrons. As we move from left to right in the periodic table the nuclear charge increase and the atomic radius decreases. Such a condition favors the tendency of acceptance of electrons, hence, electron affinity increases.

The periodic law owes its development to the Russian chemist ____ and the German chemist ____.

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The periodic law owes its development to the Russian chemist Dmitri Mendeleev and the German chemist Lothar Meyer.

Ca, Sr and Ba are alkali metals.

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Ca, Sr and Ba are alkaline earth metals. Their oxides are alkaline in nature and exist in the earth's crust.

All chemical and physical properties are a manifestation of the ____ of elements.

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All chemical and physical properties are a manifestation of the electronic configuration of elements.

French geologist A.E.B.de Chancourtois arranged the then known elements in order of ____ and made a ____ table of elements to display the periodic recurrence of properties.

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French geologist A.E.B.de Chancourtois arranged the then known elements in order of increasing atomic weights, and made a cylindrical table of elements to display the periodic recurrence of properties.This classification did not attract much attention.

The number of elements known at present is ____.

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The number of elements known at present is 114.

Magnesium belongs to the ____ group.

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Magnesium belongs to the llA group.

In a group, the metallic character of elements ____ as we move from top to bottom.

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In a group, the metallic character of elements increases from top to bottom. This is due to the gradual increase in atomic size.

Which of the following is a metalloid?

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Si is a metalloid since, it shows the properties of both metals and non-metals.

Which of the following property of alkali metals increases with the increase in atomic number?

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In alkali metals with the increase in atomic number, the atomic size of the atom increases. This is due to the increase in the number of shells and the decrease in nuclear charge.

Law of Triads was referred to as ____ relationship.

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Law of Triads was referred to as Dobereiner's relationship.

The atomic size of the elements of group I ____ as we move down the group.

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The atomic size of the elements of group I increases as we move down the group.

The reverse trend of the metallic character for the transition elements can be explained in terms of ____ and ____.

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The reverse trend of the metallic character for the transition elements can be explained in terms of atomic size and ionization enthalpy.

The old periodic law states that the properties of the elements are a periodic function of their ____.

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The periodic law states that the properties of the elements are a periodic function of their atomic weights.Mendeleev was responsible for publishing the Periodic Law for the first time.

In periodic table, the metallic character decreases along a period.

Correct! Wrong!

In a period, the metallic character decreases from along a period and the non-metallic character increases.

The metallic character of the elements ____ down the group.