
(Note that the heavier halogens also have filled ( n 1) d10 subshells, as well as an ( n 2) f14. Answer: All have an ns2np5 electron configuration, one electron short of a noble gas electron configuration. Please let us know how we can improve this web app. Use the periodic table to predict the characteristic valence electron configuration of the halogens in group 17. The outermost electronic configuration of the most electronegative element is (A)ns2 np3 (B)ns2 np4 (C)ns2 np5 (D)ns2 np6 LEVEL - II Subatomic Particle 31.
Related: Molecular weights of amino acids Weights of atoms and isotopes are from NIST article.
Molar mass ( molar weight) is the mass of one mole of a substance and is expressed in g/mol. Assign the position of the element having outer electronic configuration in the periodic table. (1 u is equal to 1/12 the mass of one atom of carbon-12) Molecular mass ( molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.Įxamples of molecular weight computations:ĭefinitions of molecular mass, molecular weight, molar mass and molar weight Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.Ĭomputing molecular weight (molecular mass) Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al. Computing molar mass (molar weight)To calculate molar mass of a chemical compound enter its formula and click 'Compute'.