Halogen

Maggie Mitchell IB Chemistry Prd. 5 THE HALOGENS LAB Date: 9/11/13 Purpose: The purpose of this experiment was to observe and record the halogens' (NaF, NaCl, NaBr, and KI) reactions with the chemicals Ca(NO3)2, AgNO3, and NH4OH and use these observations to identify an unknown halogen. Data: (see next page) TABLE 1: REACTIONS OF HALOGENS WITH CA(NO3)2, AGNO3, AND NH4OH REACTION NAF NACL NABR KI REACTION W/ CA(NO3)2 solution turns cloudy and precipitate forms clear precipitate

Metals and Halogens reactions Elements such as fluorine, chlorine, bromine, iodine, and astatine belong to Group 7, Halogens. At room temperature, fluorine is a yellow gas, chlorine is a pale green gas, bromine is a red liquid, and iodine is a purple solid. Astatine is a radioactive element, therefore it exists only in small amounts. All the halogens exist in diatomic molecules. They have high ionization energies and are the most electronegative elements. Their electron configuration ns2 np5 make

Introduction Halogen bonding, XB, is the product of a non-covalent interaction between a halogen X and a negative site B (e.g., Lewis base). The halogen, X, is usually part of an R-X molecule where R can be another halogen, an organic or an inorganic electron-donating-group. Halogen bonding (XB) is in some ways analogous to hydrogen bonding (HB). In the latter, a hydrogen atom is shared between an atom, group or molecule that “donates” and another that “accepts” it.[1-3] In halogen bonding, it is

Earths and the Halogens: Two Families in the Periodic Table Lab Report By: YOU Introduction: The purpose of this lab was to find the relative solubilities of some salts of the Alkaline Earths and use that information to find the order which they appear in the periodic table; also use that information to efficiently find an unknown alkaline earth halide. Also to find the relative oxidizing powers of the Halogens given and using that information finding the order of the Halogens in the periodic

Halogenoalkanes in Relation to their Carbon Chain Length. Introduction The halogens are elements which are located on the periodic table in group 7 and consist of these five toxic, non-metallic elements: fluorine (F2), chlorine (Cl2), bromine (Br2), iodine (I2), and astatine (At). Although astatine is radioactive and only has short-lived isotopes, it behaves similar to iodine and is often included in the halogen group. The halogen elements have seven valence electrons, and so they have a desire for one

seventeenth column of the periodic table, are known as Halogens. Halogens are nonmetals and they have an effective nuclear charge, because of this they're highly electronegative. Due to their electronegativity, they're very reactive and they gain electrons through reactions with other elements. However, halogens can be very harmful or deadly to biological organisms. Physical properties of Halogens When the electron shells are filled, the

don’t need a chemical change to occur. Four properties of the alkali metals and halogens will be talked about through this essay, two chemical and two physical. The two chemical properties will be reactivity, how willing a substance is to undergo a chemical change and toxicity, the ability of a substance to cause damage to an

scientific knowledge and understanding: Halogenoalkanes are classified as either primary, secondary or tertiary. In primary halogenoalkanes the halogen atom is covalently bonded to a carbon atom which is bonded to one other carbon, to two other carbons in secondary and three others in tertiary. Apparatus for a reflux Increasing the size of the halogen atom in the halogenoalkane decreases the bond strength, increasing the reactivity of the molecule, as the bond is easier to break. BOND

Title of Experiment: An Activity Series Lab MSDS: Copper, Cu(s) Stability- Stable. Incompatible with strong acids, active halogen compounds, chlorine, fluorine, iodine, bromine, ammonia. May react explosively with strong oxidizing agents. Toxicology-Dust may cause respiratory irritation. Personal Protection- Suitable ventilation if handling powder. Zinc, Zn(s) Stability-Stable. Incompatible with amines, cadmium, sulfur, chlorinated solvents, strong acids, strong bases. Air and moisture

reactive with pretty much everything. It reacts violently with water by producing a bright flame, which leads to the production of hydrofluoric acid and oxygen. However, fluorine does not react with pure oxygen itself. It does react with some of its halogen friends, chlorine and bromine, easily to form interhalogen species. However, fluorine has difficulty reacting with iodine and rarely, if ever, reacts with astatine. Fluorine reacts only with dilute acids and bases and normally involves being mixed