Question

Use the pictures below to help you answer the following question:


Which statement below is NOT true about this atom?



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(1 point)
Responses

Its atomic mass is 12N.
Its atomic mass is 12N.

It is a stable atom.
It is a stable atom.

It is a Sodium (Na) atom.
It is a Sodium (Na) atom.

It has equal number of protons and electrons.
It has equal number of protons and electrons.
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Answer 1

I can’t see the picture you mention. If the atom in the picture is the common exercise atom with 11 protons and 12 neutrons (so 11 electrons if neutral) — i.e. sodium‑23 — then the NOT true statement is:

"Its atomic mass is 12N."

Reason: the atomic mass (mass number) = protons + neutrons = 11 + 12 = 23 (not 12). The other statements would be true: it is Na (atomic number 11), it has equal protons and electrons if neutral, and Na‑23 is a stable isotope.

If your picture is different, please upload it or tell me the number of protons and neutrons shown and I’ll answer exactly.