Note Hydrogen's configuration 1s2 will appear as 1s2

Match the element to the electron configuration

Note Hydrogen's configuration 1s² will appear as 1s2

[Ne] 3s2 3p5

[Ne]3s2 3p3

[Ar] 482 3d1

[Kr] 5s2

Expert Solution

Atomic number of the element = Atomic number of Noble gas + remaining electrons

[Ne] 3s23p5 = 10+2+5 = 17 ,Hence Chlorine is associated with atomic number 17

[Ne] 3s23p3 = 10+2+3 = 15, Hence Nitrogen is associated with atomic number 15

[Ar] 4s23d1 = 18+2+1 = 21, Hence Scandium is associated with atomic number 21

[Kr] 5s2 = 36+2 = 38, Hence Strontium is associated with atomic number 38

queen_honey_blossom answered 2 years ago

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