The 18 electron rule states that for d-block elements normally complexes with 18 electrons in the shell (ns 2 (n-1)d 10 np 6 configuration) are most stable. It has 18 electrons. 8 years ago. Ask Question + 100. It does not conduct electricity in the molten state. 31 P b. User’s need to read the question very clearly and understand that before they attempt to answer it. In answering a question like this, keep in mind that when something is positively charged it has lost electrons, and, conversely, when something is negatively charged, it has gained electrons. Relevance. Neutrons = 20 (i) The particle is called an ion because of the more number of the electrons in the atom. Electrons = 18 . This series each have 18 electrons. Both species have the same number of electrons. A. I and II only. protons determine the element: phosphorus has 15. if the electrons equal the protons, then it is neutral. There will be a negative charge on the atom due to more electrons, these type of ions are called anions. B. I and III only. C. Both species have the same number of neutrons. Pls. III. 2) K+ has 18 electrons. It is best platform to learn more about this question as it come with number of suggest clues. 3) S has 16 electrons. a. 18. 34 S 2- c. 36 Cl d. 80 Br - e. 16 O 163. I will show you how to identify what an element is when you know its number of protons, and the other most effective thing is Periodic Table. Get your answers by asking now. Anonymous. C. II and III only. A solid has a melting point of 1582 °C and does not dissolve in water. Still have questions? Al has 13 protons, therefore the nuclear charge is greatest and pulls the electrons closer, thus is … II. Isoelectronic species are those which have same number of electrons. The 18-electron rule is a chemical rule of thumb used primarily for predicting and rationalizing formulas for stable transition metal complexes, especially organometallic compounds. Which species has 18 electrons? Which group of ions and molecules has delocalized electrons in all the species? (Z= 34S16) 0 0. Favorite Answer. K + = 19 – 1 = 18; Ca 2+ = 20 – 2 = 18; Sc 3+ = 21 – 3 = 18; Cl – = 17 + 1 = 18 Thus all these ions have 18 electrons in them. Number of protons in species X = 17 . a. 34S2+ 34S2-34Ar2+ 36Se2-Answer Save. 34 S 2- c. 36 Cl - d. 80 Br e. 39 Ar 164. A. and B. and C. and graphite D. and 54. It is an uncharged species. which species has 16 protons, 18 neutrons and 18 electrons? It is 34S2-It has 16 protons, 18 electrons, and 18 neutrons. if you have more electrons than protons, then you have an anion, or negatively charged ion. 1 Answer. Which species is an isotope of 39 Cl? It is formed by homolytic fission. A typical question about isoelectronic series usually involve size comparisons. The correct answer is K (potassium). Which statement is correct? (ii) Mass number of X = 17 + 20 = 37 (iii) Atomic number of X = 17 1) Cl- has 18electrons. 4) K has 19 electrons. 5) Ca2+ has 18 electrons. a. if you have more protons than electrons, then you have a cation, or positively charged ion. Since the number of electrons are the same, size is determined by the number of protons. If this number is not reached, the species is coordinatively unsaturated and tend to add more ligands. 40 Ar + b. The species _____ contains 16 neutrons. Get general knowledge question on A monatomic species that has 18 electrons and a net charge of 2 has. 39 K b. 32 S-2 c. 35 Cl d. 27 Al +3 e. 64 Cu +2 162.