Question

an atom of lead has the atomic number 82 and a mass number of 207. how many neutrons does this atom of lead have?

Answer 1

Answer:

Atomic no.= 82

Mass no.= 207

we know,

no.of electrons=no of protons= no of Neutrons

so

No of neutron= Mass no. - Atomic No.

= 207 - 82

= 125

hence no of neutrons = 125

Hope it helps

Answer 2

Answer:

The number of neutrons in Lead is 125

Explanation:

Atomic Number of Lead is 82 and its mass number or atomic mass is 207. we can determne the number of number of neutrons by the formula

no. of neutrons = mass no. - atomic no.

no. of neutrons = 207 - 82 = 125

Hence number of neutrons in in lead is 125

To learn more about atomic mass or atomic number from the given link

https://brainly.in/question/156516

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