The term periodicity is the properties of elements, which are arranged in the increasing order of their atomic numbers. Then the elements with similar properties:

reoccur after a fixed interval

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reoccur after certain regular interval

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form vertical groups

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form horizontal rows

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Solution

The correct option is B reoccur after certain regular interval
When elements are arranged in incresing order of atomic number, elements with similar properties reoccur (due to similar outer electronic configuration) at regular intervals in the periodic table.
Elements coming at intervals of $2, 8, 8, 18, 18, 32$ will have similar properties and thus grouped in one particular group.
Ex : Elements with atomic number $1, 3, 11, 19, 37, 55, 87$ .
Elements with atomic number $4, 12, 20, 38, 56, 88$ will have similar properties.

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Similar questions

Q. The periodic repetition of the elements with similar properties after certain regular interval when atoms are arranged in increasing order of atomic number is called periodicity.

The periodical repetition of elements with similar properties after certain regular intervals when elements are arranged in order of increasing atomic number is called:

Q. The recurrence of similar properties of the elements when they are arranged in the order of increasing atomic number, after certain regular intervals, is called:

The phrase "periodicity in the properties of elements” means that when elements are arranged in the increasing order of their atomic numbers, similar elements

___ is a tabular arrangement of elements in vertical columns and horizontal rows indicating the regular trends in the properties of elements.

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