What is phosphorus (element 15), its white and red allotropic forms, is it a metal nonmetal or metalloid, how many electrons, protons, neutrons does it have
Protons/Electrons:15 Neutrons:16 Shell structure:2,8,5 Electron configuration:[Ne]3s23p3 Oxidation state:±3,4,5 Crystal structure:triclinic Phosphorus was discovered by H. Brand in 1669 by heating concentrated urine, producing a snow-white substance that illuminated in the dark. Named ...
What nuclide has 27 protons and 33 neutrons? Which gas below was not found in the earth's earliest atmosphere? a. O2 b. SH2 c. CH4 d. NH3 e. all the above Which element has the same number of valence electrons as nitrogen (N)? a. carbon (C) b. phosphorus (P) c. neon (Ne...
lack protons and neutrons. \\ b. contain electrons in their atomic nuclei. \\ c. are composed of matter. \\ d. are chemical compounds. Which of the following compounds that contain chlorine is non-polar? a. HCl b. CHCl3 c. CCl4 d. CH2Cl2 e. They are...