Question

The atomic number and mass number of sodium are 11 and 23. what information is conveyed by their statement.​explain briefly ​

Answer 1

Answer:

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The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.

Answer 2

Answer:

Explanation:

The atomic number and mass number of sodium are 11 and 23 respectively.

This suggests that number of proton in sodium =11 and number of nucleons i.e. proton and neutrons in sodium =23.   Thus, number of neutrons =12 and also Since no. of protons = no. of electrons =11