Corn Tortillas (2) 120 cal, no fat, no sodium, 26g carbs, 2g fiber, 4g protein. Getting 2 corn tortillas instead of 4 in the tacos is a great way to cut down on calories without feeling like youâre missing out. The nutrition info says thereâs no sodium in them at all, though I wonder if thatâs a typo.
Helium. Helium. A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas.
Atomic Symbols: The atom of each element is made up of electrons, protons and neutrons. All atoms of the same neutral element have the same number of protons and electrons but the number of neutrons can differ. Atoms of the same element but different neutrons are called isotopes. Because of these isotopes it becomes necessary to develop a notation to distinguish one isotope from another - the atomic symbol. Consider two isotopes of gallium, one having the 37 neutrons and the other having 39 neutrons.