The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. what is the mass number of sodium?

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?