Elemental boron is composed of 2 isotopes, boron-10 and boron-11 (A) how many  protons and neutrons are found in these two isotopes of boron ?(B) write the correct isotopic notation for eachof these isotopes of boron?(C) calculate the mass percent of protons in the nucleus of each of these isotopes

Question
Asked Nov 1, 2019
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Elemental boron is composed of 2 isotopes, boron-10 and boron-11 

(A) how many  protons and neutrons are found in these two isotopes of boron ?

(B) write the correct isotopic notation for eachof these isotopes of boron?

(C) calculate the mass percent of protons in the nucleus of each of these isotopes

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Expert Answer

Step 1

(A) Isotopes are the atoms of same element having the same atomic number. They have the same number of protons.

It is known that, atomic number of boron = 5

As per the relation mentioned below:

Atomic number = number of e
= number of p'
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Atomic number = number of e = number of p'

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Step 2

The both isotopes of boron have 5 protons in their nucleus.

Now, as per the relation shown as follows:

Z+number of neutrons
A
here,A mass number
Z atomic number
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Z+number of neutrons A here,A mass number Z atomic number

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Step 3

Thus, number of neutrons in boron-10 = 10 – 5 = 5

Nu...

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