4/29/2013 5.1 Lab Report - Identification of Metallic Ions TITLE: LAB 5.1 IDENTIFICATION OF METALLIC IONS PURPOSE: In this lab we are learning how to observe and perform “flame tests”‚ of alkali and alkaline earth metal ions. We will use basic lab equipment provided in our Labpaq‚ and follow all safety precautions in this lab. From reading the discussion and review‚ we understand that the normal configuration of the electrons is called “the ground state”. We understand that they are
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V+5 and why? (1) 5 How cathode rays are originated in the discharge tube and how their origin differs from the origin of anode rays? 6 When is a cation highly polarizing? Which alkali metal has the highest polarizing power? (1) 7.Why is KO2 paramagnetic? (1) 8 Potassium and Caesium are used in photoelectric cells
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Ocean County College Department of Chemistry Identification of Metallic Ions Purpose: The purpose of this lab exercise was to perform and observe the flame tests of some alkali and alkaline earth metal ions. When electrons in metallic ions are grounded‚ their configuration is stable. In other words‚ the loosely bound electrons in the valence shell of the atom are satisfied at their “low” energy state. They do not require to be balanced by emitting any type of radiation or receiving any
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20: Select the best answer to each question. Note that a question and its answers may be split across a page break‚ so be sure that you have seen the entire question and all the answers before choosing an answer. 1. The two most well-known alkaline earth metals are A. calcium and magnesium. B. magnesium and barium. C. strontium and radium. D. calcium and barium. 2. Refer to the periodic table of elements (Figure 30 in your study unit) to help you answer
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phase by a solid-phase synthesis method. The blown-up parameter confirms the feasibility for industrialization. Having exchange property with acid and base together. The resulting resins show good properties for the removal and even recovery of heavy-metal ions from their aqueous solutions or wastewater [33]. The Na form of two chelating ion exchange resins Chelex 100 (Bio-Rad) and Amberlite IRC 748‚ both of which have iminodiacetic acid function group‚ was used to exchange Cu2+ and Zn2+ from
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learn some descriptive chemistry. Cations are Alkali and Alkaline earth metals group‚ they are quite easily excited to higher energy states such that the energy supplied is sufficient. Alkali and Alkaline earth metals are very reactive metals that do not occur freely in nature. To investigate or verify the above concept an experiment was conducted with the following objectives: (1) perform flame and confirmatory tests on alkali and alkaline earth ion and ion (III) ion (2) identify the substances responsible
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Magnesium Mg(Z=12) in Group 2 Alkaline Earth Metals The structure of the element: Giant lattice metallic structure of immobile positive metal ions surrounded by a ’sea’ of freely moving mobile electrons (so-called delocalised electrons). Physical properties: A moderately hard silvery-white solid; mpt 649oC; bpt 1090oC; good conductor of heat/electricity. Group‚ electron configuration (and oxidation states): Gp2 Alkaline Earth Metal; e.c. 2‚8‚2 or 1s2 2s2 2p6 3s2; (+2 only) e.g. MgCl2
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second group called the alkaline earth metals. Magnesium is found in seawater‚ salty layers and in many rock minerals. IT could be used as metal. It’s the third most abundant structural metal in the earth’s crust‚ only exceeded in aluminum and iron.Magnesium readily ignites upon heating in air and burns with a dazzling white flame. To extinguish the flame water should not be used. Alkaline earth metal salts in general‚ are less soluble in water than the corresponding alkali metal salts. Some are even
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BERYLLIUM Beryllium is a hard and brittle alkaline earth metal‚ which is greyish in colour‚ and an excellent thermal and electrical conductor. The melting point of beryllium is 1278°C‚ the boiling point is 2970°C. There is a fine layer of beryllium oxide covering it’s surface so it will not react with water or steam. However‚ it will react with oxygen when heated to around 600°C. Beryllium originally named glucinium‚ which derives from the Greek word “glykys”‚ which means sweet. This
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Vidyamandir Classes ANSWERS - JEE MAINS Test - 1/IITJEE-2014 CHEMISTRY 1 D 11 D 21 C 2 D 12 C 22 B 3 D 13 B 23 D 4 C 14 C 24 B 5 C 15 B 25 B 6 B 16 C 26 B 7 A 17 C 27 B 8 B 18 D 28 A 9 D 19 D 29 B 10 A 20 C 30 D PHYSICS 31 C 32 C 33 A 34 B 35 CANCEL 36 A 37 C 38 B 39 C 40 C 41 A 42 C 43 D 44 C 45 C 46 C 47 C 48 C 49 C 50 D 51 A 52 D 53 C 54 A 55 C 56 B 57 B 58 D 59 D 60 B
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