Which of the following is the lightest element ? 1)sodium 2)lithium 3)sulfur 4)calcium.Explain with reason.
2007-03-12 16:24:14 · 3 answers · asked by Rajchem 2 in Science & Mathematics ➔ Chemistry
Look at your Periodic Table. The number with the decimal is the atomic mass unit. The one with the smallest number is the lightest element of those that you list.
CHEMISTRY TEACHER
2007-03-12 16:30:31 · answer #1 · answered by CAROL P 4 · 0⤊ 0⤋
Well, I am a chemist and out of these, the Lithium metal is the lightest. The reason it is the lightest is because it is closer to the beginning of the periodic table in simple terms. But, it has the least amount of protons and electrons.
2007-03-12 17:03:50 · answer #2 · answered by boychuka 3 · 0⤊ 0⤋
Lithium.
See the periodic table.
It has the fewest protons and neutrons, and so the lowest molecular weight in the list.
2007-03-12 16:39:38 · answer #3 · answered by Jerry P 6 · 0⤊ 0⤋