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Nuetrik [128]
2 years ago
7

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

Chemistry
1 answer:
yuradex [85]2 years ago
4 0

Answer:

...

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

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