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platinum has a mass number of 195 and contain 74 electron. how many proton and neutrons does it contain?​
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platinum has a mass number of 195 and contain 74 electron. how many proton and neutrons does it contain?​

User Boycy
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8 votes

Answer:

...

Step-by-step explanation:

p is equal to atomic number so p=74

electron also equal to atomic number if it doesn't have charge so electron =74

neuralon=atomic mass -atomic number so 195-74=121is neutron

User Diogo Rocha
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