ChemistryCLASS 10CBSE
answered 20 May 2026Why sodium's mass is 23
A.VERIFIED ANSWERfact-checked by tutors
Na has 11 protons + 12 neutrons = 23 u. It has only one stable isotope (Na-23) unlike most elements, no weighted average is needed.
Na has 11 protons + 12 neutrons = 23 u. It has only one stable isotope (Na-23) unlike most elements, no weighted average is needed.