Asked by Corey
                how many protons and nuetrons are contained in the nucleus of each of the following atoms? assuming each atom is uncharged, how many electrons are present?
a. 235/92U
b. 13/6C
c. 57/26Fe
d. 208/82Pb
e. 86/37Rb
f. 41/20Ca
            
        a. 235/92U
b. 13/6C
c. 57/26Fe
d. 208/82Pb
e. 86/37Rb
f. 41/20Ca
Answers
                    Answered by
            DrBob222
            
    I'll do a couple.
U92 means atomic number is 92. So yo have 92 protons and 92 electrons.
235 is the mass number. That is the number of protons + number of neutrons; therefore, 235 = ?? number of neutrons + 92 protons. Thus 235-92 = number of neutrons.
C6-12.
6 protons. 6 electrons. 12-6 = 6 neutrons.
    
U92 means atomic number is 92. So yo have 92 protons and 92 electrons.
235 is the mass number. That is the number of protons + number of neutrons; therefore, 235 = ?? number of neutrons + 92 protons. Thus 235-92 = number of neutrons.
C6-12.
6 protons. 6 electrons. 12-6 = 6 neutrons.
                    Answered by
            136 56 Ba
            
    56 protons and 80 neutron 
    
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