Question

write 20 elements with atomic number and electronic configuration​

Answer 1

Answer:

Electronic Configuration of First 30 Elements with Atomic Numbers

Atomic Number Name of the Element Electronic Configuration

19 Potassium (K) [Ar] 4s1

20 Calcium (Ca) [Ar] 4s2

21 Scandium (Sc) [Ar] 3d1 4s2

22 Titanium (Ti) [Ar] 3d2 4s2

Answer 2

Answer:

H-1

He-2

Li-3

Be-4

B-5

C-6

N-7

O-8

F-9

Ne -10

Na-11

Mg-12

Al-13

Si-14

P-15

S-16

Cl-17

Ar-18

K-19

Ca-20

Explanation:

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