Question

how to calculate mass of boron​

Answer 1

Answer:

Notice that boron, B , which is located in period 2, group 13 of the periodic table, has an atomic number equal to 5 . This means that any atom that has 5 protons in its nucleus will be a boron atom. So, the mass number of this boron isotope is equal to 11 , and the atomic number to 5 .

Explanation:

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Answer 2

Answer:

Atomic mass is the sum of number of protons and of neutrons.

Boron contains five protons and six neutrons in it.

So, it's atomic mass is 11.

i.e.

Atomic Mass of Boron = Number of protons + Number of neutrons

=> 5 + 6

=> 11 u (amu)

\textbf{Atomic Mass of Boron is}Atomic Mass of Boron is

\textbf{11 u (amu)}11 u (amu)

For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.