Problem: Fill in the missing information for the neutral isotopes in the table belowElement:SeMass number:7765Number of neutrons:3645Number of protons:Number of electrons:36

FREE Expert Solution

Atomic number (Z): (from the periodic table)"

represents the identity of the element
reveals the number of protons
in a neutral element:

            # of protons = # of electrons

Mass number (A)

reveals the number of protons and neutrons

            mass number = # of protons + # of neutrons


Column 1:

Element: Se (selenium)

atomic number = 34

# of electrons = 34

# of protons = 34

# of neutrons = mass number – # of protons

# of neutrons = 77 – 34

# of neutrons = 43


Column 2:

# of protons = mass number – # of neutrons

# of protons = 65 – 36

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Problem Details

Fill in the missing information for the neutral isotopes in the table below

Element:

Se



Mass number:

77

65


Number of neutrons:


36

45

Number of protons:




Number of electrons:



36


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