How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers ?

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Solution

Element in the second period Li (3) Be (4) B (5) C (6) N (7) O (8) F (9) Ne(10)

Electronic configuration 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8

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How does electronic configuration of atoms change in a period with increase in atomic number? [2 MARKS]

(a) What is a period in a periodic table? How do atomic structures (electron arrangements) change in a period with the increase in atomic numbers from left to right?

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Element in the second period	Li (3)	Be (4)	B (5)	C (6)	N (7)	O (8)	F (9)	Ne(10)
Electronic configuration	2,1	2,2	2,3	2,4	2,5	2,6	2,7	2,8

How do electronic configurations of elements change in second period of periodic table with increase in atomic numbers ?

Element in the second period Li (3) Be (4) B (5) C (6) N (7) O (8) F (9) Ne(10) Electronic configuration 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8

Element in the second period Li (3) Be (4) B (5) C (6) N (7) O (8) F (9) Ne(10)

Electronic configuration 2,1 2,2 2,3 2,4 2,5 2,6 2,7 2,8