Question

complete the chart using your periodic table to determine the missing information. type directly in the chart.the first two have been done for you.
isotope symbol|element name|short name|atomic number|mass - number|# of protons|# of neutrons|# of electrons
cd - 110|cadmium 110|cd - 110|48|110|48|110 - 48 = 62|48
c - 12|carbon - 12|c - 12|||
sc - 45|sc - 45|||
y - 89|y - 89|39|89||
tb - 158|tb - 158|158|65||

Explanation:

Step1: Recall atomic number properties

Atomic number = number of protons = number of electrons for neutral atoms.

Step2: Calculate neutrons

Number of neutrons = Mass - number - Atomic number.

For Carbon - 12:
Atomic number of carbon from periodic table is 6.
Isotope symbol: $^{12}_{6}C$
Number of protons = 6
Number of neutrons = 12 - 6 = 6
Number of electrons = 6

For Sc - 45:
Atomic number of scandium from periodic table is 21.
Isotope symbol: $^{45}_{21}Sc$
Number of protons = 21
Number of neutrons = 45 - 21 = 24
Number of electrons = 21

For Y - 89:
Number of protons = 39 (given atomic number)
Number of neutrons = 89 - 39 = 50
Number of electrons = 39

For Tb - 158:
Atomic number = 65 (given number of protons)
Isotope symbol: $^{158}_{65}Tb$
Number of neutrons = 158 - 65 = 93
Number of electrons = 65

Answer:

Isotope Symbol	Element Name	Short Name	Atomic Number	Mass - Number	# of Protons	# of Neutrons	# of Electrons
$^{45}_{21}Sc$	Scandium - 45	Sc - 45	21	45	21	24	21
$^{89}_{39}Y$	Yttrium - 89	Y - 89	39	89	39	50	39
$^{158}_{65}Tb$	Terbium - 158	Tb - 158	65	158	65	93	65