Question

An atom of neon has 10 protons,10 electrons and 11 neutrons.how many does it contain?

Answer 1

Ответ:

Объяснение:

The number of protons indicates the serial number, and the number of nucleons (the sum of protons and neutrons) indicates the atomic number

Therefore, the serial number will be 10, and the atomic number will be 21. This is an isotope of neon