An atom has the electronic configuration of $1s^2, 2s^2 2p^6, 3s^2 3p^6 3d^{10}, 4s^2 4p^5$. Its atomic weight is $80$. Its atomic number and the number of neutrons in its nucleus shall be
- A$35$ and $45$
- B$45$ and $35$
- C$40$ and $40$
- D$30$ and $50$
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Match the following columns:
$(i) \ _{26}Fe^{54}, \ _{26}Fe^{56}, \ _{26}Fe^{58}$ $(a) \ \text{Isotopes}$ $(ii) \ _1H^3, \ _2He^3$ $(b) \ \text{Isotones}$ $(iii) \ _{32}Ge^{76}, \ _{33}As^{77}$ $(c) \ \text{Isoelectronic}$ $(iv) \ _{92}U^{235}, \ _{90}Th^{231}$ $(d) \ \text{Isobars}$ $(v) \ _1H^1, \ _1D^2, \ _1T^3$
| $(i) \ _{26}Fe^{54}, \ _{26}Fe^{56}, \ _{26}Fe^{58}$ | $(a) \ \text{Isotopes}$ |
| $(ii) \ _1H^3, \ _2He^3$ | $(b) \ \text{Isotones}$ |
| $(iii) \ _{32}Ge^{76}, \ _{33}As^{77}$ | $(c) \ \text{Isoelectronic}$ |
| $(iv) \ _{92}U^{235}, \ _{90}Th^{231}$ | $(d) \ \text{Isobars}$ |
| $(v) \ _1H^1, \ _1D^2, \ _1T^3$ |
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Which of the following is an isobaric pair?
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View SolutionAddition of two neutrons in an atom $A$ would
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