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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

'X' and 'Y' are -block elements placed in group 12 of the modern periodic table. 'X' is in period 4 and 'Y' is in period 5. How many elements are placed between 'X' and 'Y' in the modern periodic table?

Answer: 17

Solution

X is Zn () and Y is Cd (); the number of elements strictly between them is . The answer is 17.

Question ID VK-147992