An isotope has an atomic number of 17 and a mass number of 36. Which of the following gives the correct number of neutrons and protons in an atom of the isotope?
a
Neutrons 53, Protons 17
b
Neutrons 17, Protons 36
c
Neutrons 19, Protons 17
d
Neutrons 36, Protons 17
Explanation
Correct Option
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amerin4life@gmail.com
12 years ago
the atomic no.=17, which is also d no. of proton
mass no =36
the no. of neutrons=x
but
mass no=no of protons + no. of neutrons
36=17+x
collect like terms
36-17=x
x=19.
i.e the No. of protons and neutrons=17&19

Nnamanee promise
13 years ago
Atomic no.=no. Of proton,and mass no. =atomic no.+no. Of proton,,substituting d values we have 36=17 + no. Of neutron which is unknown,let d unknown be p,,,,so that 36=17+p n p=36-17=19 so no. Of proton=17 n neutron=19


