Question

Elements from atomic number 20 to 30 with their atomic mass

Answer 1

Explanation:

I hope this answer will helps you

Answer 2

Answer:

20. calcium 40

21. scandium 45

22. titanium. 47

23. vanadium 51

24. chromium 52

25. manganese 55

26. iron 55

27. cobalt. 59

28. nickel 58

29. copper 63.5

30. zinc. 65