Periodic Classification of Elements

Who had first proposed a table of elements based on their increasing atomic weights?

Who is known as Father of Modern Periodic Table?

Who had discovered the atomic numbers in 1913?

Which of the following statement is correct about the Modern Periodic Table?

1. It has 18 vertical columns which are called Groups.

2. It has eight horizontal rows which are called Periods.

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Which of the following elements has the largest atomic size?

Which of the following decreases while going left to right in a period of the modern periodic table?

Atomic size of an elements is measured in which unit?

The tendency of an element to lose electrons to form cations is known as ____________ of an element.

Which of the following statement is correct about the Electronegativity?

1. It decreases on going down in any group.

2. It increases from left to right in a period.

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Which is the most electronegative element in the periodic table?

Which of the following factors affect the Ionization Enthalpy?

Group-1 and Group-2 elements are part of which block of the periodic table?

Which block elements are called transition elements?

Which of the following statement is correct about the metalloids?

1. Elements that show mixed properties of metal and non-metal are known as Metalloids.

2. They are present along the diagonal line starting from group 13 (Boron) and going down to group 16 (Polonium).

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Which of the following group contains the noble gases?