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Modern periodic table trend MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 25, 2023 25:23 PM | #NEET

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  • 5 Questions around this concept.

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Which of the following property displays progressive increase with the rise in atomic number across a period in the periodic table
 

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Smart tips: classification of elements and periodic table

General Trends of Some Properties in the periodic table

The general trends of some properties of elements in the periodic table are mentioned below:

 

Property

Variation from top to bottom in a group

Variation from left to right in a period

Atomic radius

Increases

Decreases

Ionisation enthalpy

Decreases

Increases

Electron gain enthalpy

Decreases

Increases

Electronegativity

Decreases

Increases

Metallic character

Increases

Decreases

Electropositive nature

Increases

Decreases

Oxidising nature

Decreases

Increases

Reducing nature

Increases

Decreases

 

Some important facts about elements

There are some important facts about the elements as mentioned below:

  • Bromine is the only non-metal which is liquid at room temperature.

  • Mercury is the only metal that is liquid at room temperature.

  • Tungsten has the highest melting point among metals around 3410oC.

  • Carbon has the highest melting point among non-metals around 4100oC.

  • Among metals, aluminium is the most abundant metal.

  • Among all the elements in the periodic table, hydrogen is the most abundant element in the universe.

  • Iron is the most abundant transition metal.

  • Boron has the lowest atomic volume.

  • Francium has the highest atomic volume.

  • Silver is the best conductor of electricity.

  • Fluorine is the most electronegative element.

  • Chlorine has the maximum negative electron gain enthalpy.

  • Helium has the maximum ionisation enthalpy.

  • Diamond is the hardest substance in the universe.

  • Plutonium is the most poisonous metal. 

  • The members of the actinide series are radioactive and most of them are not found in nature.

  • Tin is the element that has the maximum number of isotopes i.e, 10 isotopes.

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Smart tips: classification of elements and periodic table

Chemistry Part I Textbook for Class XI

Page No. : 96

Line : 6

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