The Periodic Chart Of Atoms (Page 2 of 3) in pdf

The Periodic Chart Of Atoms Page 2

19. The number under the symbol in each square indicates the Average Atomic __________.

20. Find the symbol O , which denotes the element _______________.

21. Oxygen’s __________ __________ is 8.

22. Oxygen’s average atomic mass is __________.

23. Cu denotes the element _______________.

24. Its average atomic mass is _______________.

25. Hydrogen has an Average Atomic Mass of __________.

26. Lead (Pb) has an Average Atomic Mass of __________.

27. Mercury (Hg) has an Average Atomic Mass of __________.

28. The atomic number of Carbon is __________.

29. The Average Atomic Mass of Carbon is __________.

30. The atomic Number of Calcium (Ca) is __________.

31. The Average Atomic Mass of Ca is __________.

32. The __________ __________ __________ of Gold (Au) is 196.966.

33. Its Atomic __________ is 79.

34. The _______________ is an atomic particle which is neutral.

35. The nucleus contains two types of particles: the plus particle called a(n) ______________

and a neutral particle called a(n) _______________.

36. Oxygen has an Atomic __________ of 8 and an Average Atomic Mass of __________.

37. Therefore, oxygen has _____ protons in its nucleus, _____ electrons in its shells, and _____

neutrons also in its nucleus.

38. The average atomic mass of silver is _____. The atomic number of silver is _____. The

difference between the average atomicmass, rounded off to the nearest whole number and

the atomic number is __________. This means that an atom of silver has 61 neutrons.

39. An atom of silver has _______ neutrons, _____ electrons and _____ protons.

40. An atom of bismuth has _____ protons, _____ electrons and _____ neutrons.

The Periodic Chart Of Atoms Page 2