Halogens

Physical properties of the halogenscontains placed in a vertical column on the right of the. The elements in group 7 are called the. Group 7 is on the right-hand side of the periodic table, next to group 0The halogens show trends in their physical and chemical properties.

Physical propertiesThe halogens exist as simple. Each molecule contains two halogen joined by a single. The table shows the colour and physical of chlorine, bromine and iodine at room temperature. ElementColourStateChlorine, Cl 2Pale greenGasBromine, Br 2BrownLiquidIodine, I 2Purple-blackSolidThe and of the halogens increase going down group 7. This is because, going down group 7:.

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The halogens have valence electron configurations of ns 2 np 5 where n is the period that they call home. That means they only need to gain a single electron (with a minus one charge) in order to achieve the super stable noble gas configuration. In that sense, the halogens are like every other element on the periodic table. They want stability.

the molecules become larger. the become stronger. more is needed to overcome these forcesExampleThe graph shows the melting and boiling points of the first four group 7 elements.

Astatine is placed below iodine in group 7. Bloons td 6 download pc. Predict the melting and boiling points of astatine, and its state at room temperature.Astatine should have a melting point of about 300°C and a boiling point of about 340°C. This means that it will be solid at room temperature.