The atomic number and mass number of sodium are 11 and 23 respectively. Find the number of sub-atomic particles in Sodium.

The atomic number and mass number of sodium are 11 and 23 respectively. Find the number of sub-atomic particles in Sodium.

An atom has mass number 23 and atomic number 11. What is the number of electrons in this atom?

The atomic number for sodium is 11 and the atomic number for oxygen is 8. Based on this information find out the chemical formula for Sodium oxide?

An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct?