atomic structure worksheet 2\nthe atomic number of an element is the number of protons in the nucleus of an…

Explanation:

Step1: Iron-56: Symbol=Fe, Atomic#=26, Mass#=56, Neutrons=30, Electrons=26

Atomic number=protons=26; Symbol=Fe; Neutrons=56-26=30; Electrons=protons=26

Step2: Aluminum-27: Symbol=Al, Atomic#=13, Mass#=27, Protons=13, Neutrons=14

Electrons=13=protons; Atomic#=13; Symbol=Al; Neutrons=27-13=14

Step3: Carbon-12: Symbol=C, Atomic#=6, Protons=6, Neutrons=6, Electrons=6

Atomic#=6=protons; Symbol=C; Neutrons=12-6=6; Electrons=6

Step4: Hydrogen-1: Symbol=H, Atomic#=1, Protons=1, Neutrons=0, Electrons=1

Atomic#=1=protons; Symbol=H; Neutrons=1-1=0; Electrons=1

Step5: Phosphorus-31: Symbol=P, Atomic#=15, Mass#=31, Protons=15, Electrons=15

Protons=31-16=15; Atomic#=15; Symbol=P; Electrons=15

Step6: Arsenic-75: Symbol=As, Atomic#=33, Mass#=75, Protons=33, Neutrons=42

Electrons=33=protons; Atomic#=33; Symbol=As; Neutrons=75-33=42

Step7: Neon-20: Symbol=Ne, Atomic#=10, Mass#=20, Neutrons=10, Electrons=10

Protons=10; Symbol=Ne; Neutrons=20-10=10; Electrons=10

Step8: Potassium-39: Atomic#=19, Mass#=39, Protons=19, Neutrons=20, Electrons=19

Atomic#=19=protons; Neutrons=39-19=20; Electrons=19

Step9: Cobalt-59: Symbol=Co, Mass#=59, Protons=27, Neutrons=32, Electrons=27

Atomic#=27=protons; Symbol=Co; Neutrons=59-27=32; Electrons=27

Step10: Iodine-127: Symbol=I, Atomic#=53, Mass#=127, Protons=53, Electrons=53

Protons=127-74=53; Atomic#=53; Symbol=I; Electrons=53

Step11: Lead-207: Symbol=Pb, Atomic#=82, Protons=82, Neutrons=125, Electrons=82

Atomic#=82=protons; Symbol=Pb; Neutrons=207-82=125; Electrons=82

Step12: Oxygen-16: Symbol=O, Atomic#=8, Mass#=16, Neutrons=8, Electrons=8

Protons=8; Symbol=O; Neutrons=16-8=8; Electrons=8

Step13: Zinc-66: Symbol=Zn, Mass#=66, Protons=30, Neutrons=36, Electrons=30

Atomic#=30=protons; Symbol=Zn; Neutrons=66-30=36; Electrons=30

Step14: Chromium-52: Symbol=Cr, Atomic#=24, Mass#=52, Protons=24, Neutrons=28

Electrons=24=protons; Atomic#=24; Symbol=Cr; Neutrons=52-24=28

Step15: Barium-137: Symbol=Ba, Atomic#=56, Protons=56, Neutrons=81, Electrons=56

Atomic#=56=protons; Symbol=Ba; Neutrons=137-56=81; Electrons=56

Step16: Silver-108: Symbol=Ag, Atomic#=47, Mass#=108, Protons=47, Electrons=47

Protons=108-61=47; Atomic#=47; Symbol=Ag; Electrons=47

Step17: Gold-207: Symbol=Au, Atomic#=79, Mass#=207, Neutrons=128, Electrons=79

Protons=79; Symbol=Au; Neutrons=207-79=128; Electrons=79

Answer:

Name of Element	Symbol of Element	Atomic Number	Mass Number	Number of Protons	Number of Neutrons	Number of electrons
Sodium-23	Na	11	23	11	12	11
Iron-56	Fe	26	56	26	30	26
Aluminum-27	Al	13	27	13	14	13
Carbon-12	C	6	12	6	6	6
Hydrogen-1	H	1	1	1	0	1
Phosphorus-31	P	15	31	15	16	15
Arsenic-75	As	33	75	33	42	33
Neon-20	Ne	10	20	10	10	10
Potassium-39	K	19	39	19	20	19
Cobalt-59	Co	27	59	27	32	27
Iodine-127	I	53	127	53	74	53
Lead-207	Pb	82	207	82	125	82
Oxygen-16	O	8	16	8	8	8
Zinc-66	Zn	30	66	30	36	30
Chromium-52	Cr	24	52	24	28	24
Barium-137	Ba	56	137	56	81	56
Silver-108	Ag	47	108	47	61	47
Gold-207	Au	79	207	79	128	79