Neon is stable, but sodium is reactive. And argon, krypton, and xenon are stable, but potassium, rubidium, and cesium are reactive. The reason? It's the extra electron. The reasons these shells ...

When mixed with water, sodium reacts spectacularly ... What all of these alkali metals have in common is a single electron in their outermost shell. Atoms share electrons with other atoms in ...

This led to the research team becoming interested in artificial atoms that have one electron in the outer shell -- the artificial equivalent of hydrogen, lithium, or sodium -- which would allow ...

Sodium has 11 electrons. These will be arranged as: 2 electrons in the first shell 8 electrons in the second shell 1 electron in the third shellYou can write sodium’s electronic structure with ...

The answer is that sodium atoms, which have 11 protons, 12 neutrons and an extra electron shell, are bigger and heavier than lithium ones (three protons and three neutrons). A sodium battery will ...