atomic structure worksheet\nfill in the blanks for the elements in this chart. for the purposes of this…

atomic structure worksheet\nfill in the blanks for the elements in this chart. for the purposes of this chart, round all atomic masses to the nearest whole number.\nelement number of protons number of neutrons number of electrons atomic mass atomic number\nlithium 3 4 3 7 3\ncarbon 6 12 6\nchlorine 17 18 35 17\nsilver 108\n82 207\ncalcium 20 20 20\ntantalum 73 181\nradium 88 138\nsamarium 150\nuranium 146\n148 95\nlawrencium 159

atomic structure worksheet\nfill in the blanks for the elements in this chart. for the purposes of this chart, round all atomic masses to the nearest whole number.\nelement number of protons number of neutrons number of electrons atomic mass atomic number\nlithium 3 4 3 7 3\ncarbon 6 12 6\nchlorine 17 18 35 17\nsilver 108\n82 207\ncalcium 20 20 20\ntantalum 73 181\nradium 88 138\nsamarium 150\nuranium 146\n148 95\nlawrencium 159

Answer

Explanation:

Step1: Recall atomic - structure relationships

In a neutral atom, the number of protons = number of electrons. Atomic number = number of protons. Atomic mass ≈ number of protons+number of neutrons.

Step2: Fill in carbon's neutrons

For carbon, atomic mass = 12, number of protons = 6. Number of neutrons = atomic mass - number of protons = 12 - 6 = 6. Number of electrons = 6 (since it's neutral).

Step3: Fill in chlorine's electrons

For chlorine, number of protons = 17, so number of electrons = 17 (neutral atom).

Step4: Fill in silver's details

Atomic number of silver is 47. Number of protons = 47, number of electrons = 47. Number of neutrons = atomic mass - number of protons = 108 - 47 = 61.

Step5: Fill in the element with atomic mass 82 and atomic number 20

The element is calcium. Number of protons = 20, number of electrons = 20, number of neutrons = 82 - 20 = 62.

Step6: Fill in tantalum's neutrons and electrons

Number of electrons = 73 (neutral atom). Number of neutrons = atomic mass - number of protons = 181 - 73 = 108.

Step7: Fill in radium's electrons and atomic mass

Number of electrons = 88 (neutral atom). Atomic mass = number of protons+number of neutrons = 88 + 138 = 226.

Step8: Fill in samarium's protons, neutrons and electrons

Atomic number of samarium is 62. Number of protons = 62, number of electrons = 62, number of neutrons = 150 - 62 = 88.

Step9: Fill in uranium's protons and atomic mass

Atomic number of uranium is 92. Number of protons = 92, atomic mass = 92+146 = 238.

Step10: Fill in the element with 95 protons

The element is americium. Number of electrons = 95, number of neutrons = 148. Atomic mass = 95 + 148 = 243.

Step11: Fill in lawrencium's protons, electrons and atomic mass

Atomic number of lawrencium is 103. Number of protons = 103, number of electrons = 103, atomic mass = 103+159 = 262.

Answer:

Element Number of Protons Number of Neutrons Number of Electrons Atomic Mass Atomic Number
lithium 3 4 3 7 3
carbon 6 6 6 12 6
chlorine 17 18 17 35 17
silver 47 61 47 108 47
calcium 20 62 20 82 20
tantalum 73 108 73 181 73
radium 88 138 88 226 88
samarium 62 88 62 150 62
uranium 92 146 92 238 92
americium 95 148 95 243 95
lawrencium 103 159 103 262 103