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Using Aufbau principle, write the ground state electronic configuration of following atoms.

1. Boron (Z = 5) 

2. Neon (Z = 10) 

3. Aluminium (Z = 13) 

4. Chlorine (Z = 17)

5. Calcium (Z = 20) 

6. Rubidium (Z = 37)

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1. Boron (Z = 5) ; 1s2 2s2 2p1

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