The given table shows five atoms with their mass numbers and atomic numbers:Atoms Mass No Atomic No.40192016147Ja1 Which one of these atoms contains 7 protons?[ii] Which atom has an electronic configuration 2, 7?State the number of nucleons in atoms A' and 'B'The atomic number and mass number of an atom 'C' are 3 and 7What do you understand by this statement?resp[c][d] Write the electronic configuration of the atom 'A'.el Give the valency of the Atom 'D'

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

1.	The given table shows five atoms with their mass numbers and atomic numbers:Atoms Mass No Atomic No.40192016147Ja1 Which one of these atoms contains 7 protons?[ii] Which atom has an electronic configuration 2, 7?State the number of nucleons in atoms A' and 'B'The atomic number and mass number of an atom 'C' are 3 and 7What do you understand by this statement?resp[c][d] Write the electronic configuration of the atom 'A'.el Give the valency of the Atom 'D'
Answer» Solving the marked questionsa)1)as number of protons=atomic numberhence 7 protons -E2)Configuration is 2,7 hence 2+7=9-Bb)In atom A and BA-In number of nucleons as atomic number is 20 hence 20 neutrons 20 protonsB-atomic number is 9hence 9 protons and 9 neutrons