Question

An isotope contains 11 protons, 10 electrons, and 12 neutrons. What is the identity of the isotope ?

Answer 1

Answer:

Sodium has an atomic number of 11. The number of protons determines the atomic number. The 11 protons makes an atomic number of 11.

The 11 protons have a charge of +11 while the 10 electrons have a charge of -10. This results in a net charge of +1

+

11

+

−

10

=

+

1

Sodium

23

11

N

a

is the most common isotope of sodium.

The mass of an atom is the sum of the number of protons and neutrons. 11 protons and 12 neutrons results in a total mass of 23

11

+

12

=

23

To be totally correct the symbol could be written as

23

11

N

a

+

1

Explanation:

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