16\ns\nsulfur\n32.06\natomic # =\natomic mass =\nmass number =\n# of protons =\n# of neutrons =\n# of…
16\ns\nsulfur\n32.06\natomic # =\natomic mass =\nmass number =\n# of protons =\n# of neutrons =\n# of electrons =\n12\nmg\nmagnesium\n24.305\natomic # =\natomic mass =\nmass number =\n# of protons =\n# of neutrons =\n# of electrons =\n79\nau\ngold\n196.967\natomic # =\natomic mass =\nmass number =\n# of protons =\n# of neutrons =\n# of electrons =
Answer
Explanation:
Step1: Recall atomic number definition
Atomic number is the number at the top of the element box.
Step2: Recall atomic mass
Atomic mass is the number at the bottom of the element box.
Step3: Recall mass - number concept
Mass number is the whole - number closest to the atomic mass.
Step4: Recall proton - atomic number relation
Number of protons equals atomic number.
Step5: Calculate neutrons
Number of neutrons = Mass number - Number of protons.
Step6: Recall electron - proton relation
In a neutral atom, number of electrons equals number of protons.
For Sulfur (S):
Atomic # = 16 Atomic Mass = 32.06 Mass Number = 32
of Protons = 16
of Neutrons = 32 - 16=16
of Electrons = 16
For Magnesium (Mg):
Atomic # = 12 Atomic Mass = 24.305 Mass Number = 24
of Protons = 12
of Neutrons = 24 - 12 = 12
of Electrons = 12
For Gold (Au):
Atomic # = 79 Atomic Mass = 196.967 Mass Number = 197
of Protons = 79
of Neutrons = 197 - 79 = 118
of Electrons = 79
Answer:
Sulfur: Atomic # = 16 Atomic Mass = 32.06 Mass Number = 32
of Protons = 16
of Neutrons = 16
of Electrons = 16
Magnesium: Atomic # = 12 Atomic Mass = 24.305 Mass Number = 24
of Protons = 12
of Neutrons = 12
of Electrons = 12
Gold: Atomic # = 79 Atomic Mass = 196.967 Mass Number = 197