Example: Oxygen is in the 16th period. In the case of Tin the abbreviated electron configuration is [Kr] 4d10 5s2 5p2. The atomic mass is the mass of an atom. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure.The chemical symbol for Tungsten is W. Atomic Mass of Tungsten. Mass number: 115 Now we get the number of neutrons: n = A - p n = 115 - 50 n = 65 So 115Sn has a mass number of 115, 50 protons, 50 electrons and 65 neutrons. Usingm of tin electrode: Trail-1:Moles of tin prduced = 2.78x10-3mol Number of electrons flowed through the cell due to 2.78x10-3mol tin = q / e = 63.798 C / 1.602x10-19C = 3.9824x1020 view the full answer Electrons have a specific form of distribution (or configuration) in every atom, even Tin. Some are hard to memorise (or predict), so what is the electron configuration of an atom of Sn? The number of neutrons varies because there are different isotopes of tin. It is malleable, ductile and highly crystalline. Characteristics and Properties Under standard conditions tin is a soft silvery-gray metal. This tells you about the relationship between the two. Atomic mass of Tin is 118.71 u. 2. 1. The tin atom has a radius of 140.5 pm and a Van der Waals radius of 217 pm.In its elemental form, tin has a silvery-gray metallic appearance. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. The tin has 5 energy level (shell) because it is in the 5th row of the periodic table. Atomic Number of Tin. And there will be 50 electrons around a neutral atom of tin. 115 Sn or Tin 115 Atomic number: 50 Protons: 50 Electrons: 50 Neutrons: ? Every atom of tin has 50 protons in its nucleus. The number of electrons in each of tin's shells is 2, 8, 18, 18, 4 and its electron configuration is [Kr] 4d 10 5s 2 5p 2. Element Tin (Sn), Group 14, Atomic Number 50, p-block, Mass 118.710. Atomic Number of Tungsten. The chemical symbol for Tin is Sn.. Atomic Mass of Tin. Tin can form two different allotropes under normal pressure. If the number is larger than 10, subtract 10 so you get two valence electrons. *Note that isotopes have the same number of electrons, protons and atomic number as the original atom. If you look at the periodic table and at the period numbers, that is the number of valence electrons. You might see the oxidation number, something like 2+ or 3-. It is very malleable (meaning that it can be pounded into a thin sheet) and can be polished to a shine. Each square on the periodic table contains a letter symbol for an element printed directly under the atomic number of the element. 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