Consider the following representation based on long form of periodic table. [SEE DIAGRAM] Here P, Q, R and S are up, right, down and left elements with respect to the central element 'X' respectively.

Question

Consider the following representation based on long form of periodic table. [SEE DIAGRAM] Here P, Q, R and S are up, right, down and left elements with respect to the central element 'X' respectively. According to above representation the correct match is/are :

Prashant Kotian · Accepted Answer

Correct answer: A,B,C,D. Step 1: Recall the statement of the Modern Periodic Law as established by Henry Moseley. Step 2: The Modern Periodic Law states that the physical and chemical properties of elements are periodic functions of their atomic numbers. Step 3: Periodicity (the recurrence of similar properties) is thus observed when the elements are arranged in order of increasing atomic number.

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