16.The given table shows five atoms with their mass numbers and atomic numbers:Atoms Mass No Atomic No.40192093871614(1X5-5)a) [i] Which one of these atoms contains 7 protons?[ii] Which atom has an electronic configuration 2, 7?b] State the number of nucleons in atoms 'A' and 'B'.[c] The atomic number and mass number of an atom 'C' are 3 and 7 respectively.What do you understand by this statement?[d] Write the electronic configuration of the atom 'A' Q,8,e] Give the valency of the Atom 'D'

16.The given table shows five atoms with their mass numbers and atomic

1.	16.The given table shows five atoms with their mass numbers and atomic numbers:Atoms Mass No Atomic No.40192093871614(1X5-5)a) [i] Which one of these atoms contains 7 protons?[ii] Which atom has an electronic configuration 2, 7?b] State the number of nucleons in atoms 'A' and 'B'.[c] The atomic number and mass number of an atom 'C' are 3 and 7 respectively.What do you understand by this statement?[d] Write the electronic configuration of the atom 'A' Q,8,e] Give the valency of the Atom 'D'
Answer» As no of protons= Atomic number hence 7 protons -E.2.configuration is 2,7,hence 2+7= 9- BB. In atom A and B A- In number of nucleons as atomic number is 20 hence 20 neutrons 20 protons B- atomic number is 9hence 9 protons and 9 neutrons.