Question

in the modern periodic table the positions of 1 to 20 elements are shown here identify the elements A and B wite their atomic number​

Answer 1

name of elements and its atomic numbers

1.Hydrogen (H)

2.Helium (HE)

3.Lithium (LI)

4.Beryllium (BE)

5.Boron (B)

6.Carbon (C)

7.Nitrogen (N)

8.Oxygen (O)

9.Flurine (F)

10.Neon (NE)

11.Sodium (NA)

12.Magnisium (MG)

13.Aluminium (AL)

14.Sillicon (SI)

15.phosphorous (P)

16.Silpher (S)

17.Cholorine (CL)

18.Argon (AR)

19.Potassium (K)

20.Calcium (CA)

These are atomic numbers, elements and symbols