Answer:
Magnesium and strontium
Explanation:
11 protons and 11 electrons, 12 neutrons.
The atomic number of sodium is 11, therefore the number of electrons and protons are 11. The atomic mass is 23, and to find neutrons you need to subtract the atomic number from the atomic mass, therefore the number of neutrons are 12.
by using pro.gram..
this look hard
hmm
Dehydration to alkenes!
