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Chemistry 9 Chapter 2 Structure of Atom -11

1. Which one of the following has the highest amount of energy?




2. How many maximum electrons can be accommodated by the d sub shell?




3. The arrangement of electrons in the sub-shells is known as?




4. The energies of the sub-shells increase in the order?




5. The lowest energy sub-shell is?




6. Electronic configuration of hydrogen is?




7. Lithium has the atomic number 3. The last electron will occupy the sub-shell?




8. Beryllium has atomic number 4. How many electrons would be present in 2s sub-shell?




9. 2p sub-shell can hold a maximum of___ electrons?




10. Flourine has the atomic number 9. How many electrons would be present in its 2p sub-shell?




11. Which one of the following sub-shells is filled after the 2p has completely filled?




12. Mg has the atomic number 12. How many electrons would be present in the 3s sub-shell?