Question

Position of an unknown element $3216E$ in the Modern periodic table is

• A. Period = 2
  Group = 3
• B. Period = 3
  Group = 16
• C. Period = 2
  Group = 16
• D. Period = 16
  Group = 3

Answer 1

The correct option is B Period = 3

Group = 16
$3216E$implies that the atomic number of the element ‘E’ is 16 and the mass number is 32.
Electronic configuration of element ‘E’ = 2, 8, 6
Period = Number of shells = 3
Group = Number of valence electrons + 10 = 6 + 10 = 16
Hence, the correct answer is option (b).