321665 ' \({\mathrm{X}}\) ' and ' \({\mathrm{Y}}\) ' are d-block elements placed in group 12 of the modern periodic table. ' \({\mathrm{X}}\) ' is in period 4 and ' Y ' is in period 5. How many elements are placed between ' X ' and ' Y ' in the modern periodic table?
321665 ' \({\mathrm{X}}\) ' and ' \({\mathrm{Y}}\) ' are d-block elements placed in group 12 of the modern periodic table. ' \({\mathrm{X}}\) ' is in period 4 and ' Y ' is in period 5. How many elements are placed between ' X ' and ' Y ' in the modern periodic table?
321665 ' \({\mathrm{X}}\) ' and ' \({\mathrm{Y}}\) ' are d-block elements placed in group 12 of the modern periodic table. ' \({\mathrm{X}}\) ' is in period 4 and ' Y ' is in period 5. How many elements are placed between ' X ' and ' Y ' in the modern periodic table?
321665 ' \({\mathrm{X}}\) ' and ' \({\mathrm{Y}}\) ' are d-block elements placed in group 12 of the modern periodic table. ' \({\mathrm{X}}\) ' is in period 4 and ' Y ' is in period 5. How many elements are placed between ' X ' and ' Y ' in the modern periodic table?