answer choices . 300 seconds . At STP, which element is brittle and not a conductor of electricity . 19. C. Elements within a group have similar properties. What are the states of group 7 elements at room temperature? A)Antimony B)Krypton C)Gold D)francium. Asked by Wiki User. I have 5 neutrons. Q. CaCO 3---> CaO + CO 2. Atoms usually react to give an electron arrangement with a full outer shell by losing, gaining or sharing electrons. Wiki User Answered . 18. What's in a name? What element is it? Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br ... and iodine is a solid which melts at 113 º ... (the only nonmetallic element that is a liquid at room temperature) with a terrible smell. 13. answer choices . Group 7 is on the right-hand side of the periodic table, next to group 0 The halogens show trends in their physical and chemical properties . They're sometimes called elemental gases. b. Astatine is a very rare element, so there is not that much known about this element. What element is in group 7 and has 30 neutrons. There are really only seven diatomic elements. The chemical properties are more uniform. If room temperature is: a. below the melting point, the substance will be a solid. Tungsten has the highest melting point and lowest vapor pressure of all metals, and at temperatures over 1650°C has the highest tensile strength. It is the only element to exist at room temperature as a diatomic gas. 2012-09-29 17:57:59 2012-09-29 17:57:59. gas. 3. 13. Special Notes: Radioactive and Artificially Produced. Group Number: 16. Top Answer . There are two that are liquid at room temperature (mercury and bromine) Of the rest, group 0 / 8 the noble (inert) gases are of course gases. a red volatile liquid at standard room temperature. Mercury is liquid at room temperature and normal pressure. Bromine is the only element acts as a liquid in the room temperature. All the elements in the oxygen group have six valence electrons, and all are reactive. iv. Group 16 is called the oxygen group. I have 68 protons. Expert Answer 100% (6 ratings) Previous question Next question Get more help from Chegg. It is a form of homonuclear diatomic molecule. These are typical electron changes when non-metallic elements in groups 6 and 7 react. Element Classification: Metal. Each of the 13 elements has their own unique physical and chemical properties. which element is a solid at room temperature. Sublimation The transition of a substance directly from the solid to the gas phase without passing through a liquid phase. Flerovium is pronounced as flee-ROVE-ee-em. two compounds and one element. There are twenty-two isotopes known, but most of these are highly radioactive and have half-lifes in the several millisecond to several minute range. 1 decade ago. Five of them — hydrogen, nitrogen, fluorine, oxygen and chlorine — are gases at room temperature and normal pressure. Two compounds. D. Elements within a period have the same number of electrons. Q. Astatine - Astatine is a radioactive element with an atomic number of 85 and symbol At. 17. c. An atom of which element has the highest attraction for the electrons in a bond? A 35.1g sample of solid CO2 (dry ice) is added to a container at a temperature of 100k with a volume of 4.0L. Its atoms have two valence electrons in the 6s sublevel. 3. These reactive elements have seven valence electrons. one element … The upper elements in the same group are gases. b. above the melting point, but below the boiling point, the substance is a liquid. Livermorium is pronounced as liv-er-MORE-ee-em. two elements. ii. Group Number: 14. What's in a name? Nitrogen is a gas at room temperature. Gas- Fluorine, Chlorine. Group Name: Chalcogen. This element is corrosive to human tissue Barium: Ba 3.594 56 1.25 metallic. iodine. I have 88 electrons. SURVEY . The name "bromine" is derived from the Greek word for "stench," bromos. the answer to your other question is: Element 1: Semi-metal (it would be metal but it's not ductile) Element 2: From the info they gave you, you can say it's metal. One is a metal - mercury, Hg, and one is a nonmetal - bromine, Br. An atom of Mercury has 120 neutrons. Two are considered here: chlorine(I) oxide, Cl 2 O, and chlorine(VII) oxide, Cl 2 O 7. Answer. Solid at Room Temperature (84) These elements are solids at room temperature and pressure. Halogens range from solid to liquid to gaseous at room temperature. The elements that is very good in electrical conductivity are gold and copper: elements that is amphoteric are copper, zinc, tin, lead, aluminum and beryllium: elements that is gaseous at room temperature are hydrogen, nitrogen, oxygen, fluorine and chlorine: elements that is solid at room temperature are all metal except mercury and perhaps some unseen radioactive elements. 16. The other group 15 elements are solids. There are 7 diatomic elements, but only 5 diatomic elements at standard temperature and pressure ().The diatomic elements are hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine. Gallium (31Ga) is the only metal, except for mercury, caesium, and rubidium, which can be liquid near room temperatures; this makes possible its use in high-temperature thermometers. Which element is a noble gas? In the chemical reaction shown above, the products are best classified as. Period Number: 7. Iodine is a solid that can undergo sublimation in room temperature. Period Number: 7. B. Gases easily form compounds with other elements. Element Classification: Metal. Who am 1? 11 1. jessereneramos. Each state (solid, liquid, and gas) has its own unique set of physical properties. The negative ions are formed directly from the non-metals like halogen atoms. I'm the only metal in Group 15. Who am 1? How many valence electrons are in an atom of each element in Group 13 in the Periodic Table? History and Uses: Flerovium was first produced by scientists working … neon and argon are both elements in a group of similar elements, noble gases what properties do these elements have that make them unique . an element that is malleable and a good conductor of heat and electricity could have an atomic of: 29. The state the water is in depends upon the temperature. Tungsten is a greyish-white lustrous metal, which is a solid at room temperature. It is not really a member of any particular group. Named in honor of the Flerov Laboratory of Nuclear Reactions. At room temperature common salt sodium chloride, NaCl, is a solid and methane, CH4, is a gas explain, in terms of the bonds present in each compound, why their physical states is so different. It is the only halogen that is not a diatomic molecule and it appears as a black, metallic solid at room temperature. The halogens exist, at room temperature, in all three states of matter: Solid- Iodine, Astatine. A diatomic element is a molecule of an element consisting of two atoms. Click any element tile below to get the full entry for that element, or click on the sample picture to go directly to the description of that sample. If you look on a periodic table. The elements in the group react with another substance in similar ways. In group 7’s case this means the halogens will go from gas at room temperature to a solid at room temperature (see 2.9). Density (g cm −3) Density is the mass of a substance that would fill 1 cm 3 at room temperature. I'm the only element that is solid and a nonmetal in group 14. Who am 1? Who am i? Cd, Sb, I. nonmetals in the solid state are poor conductors of heat and tend to. 10. Hydrogen is unique among the elements because _____. Special Notes: Radioactive and Artificially Produced. iii. 1)aluminum 2)Carbon 3)Chlorine 4)lithium. 24. 15. The elements in group 7 are called the halogens. Bromine is always a liquid, while iodine can be a liquid or solid when at room temperature, depending on a number of factors. Chemistry . 16. 1 2 3. SURVEY . 60 seconds . Radon, helium, xenon, neon, krypton and argon are eight noble gases. Who am 1? Chlorine forms several oxides. c. above the boiling point, the substance is a gas When placed in water, the element reacts violently. However non-metals have a lot of different things and are not "genrally" anything since theres so much variety. At room temperature, there are two elements which are liquids, only two elements. Mercury (Hg) and bromine (Br) are the only elements in the periodic table that are liquids at room temperature. The temperature at which the liquid–gas phase change occurs. Pure tungsten metal was first isolated by two Spanish chemists, the de Elhujar brothers in 1783. An element is a solid at room temperature but soft enough to be cut with an ordinary knife. An atom of Mercury has 80 protons. Matter typically exists in one of three states: solid , liquid , or gas . The halogens have very high electronegativities. They are nonreactive, mono-atomic elements with extremely low boiling points. Its possible oxidation states include: -1, +1, 3, 5 and 7. I'm the only gas at room temperature that is in Group 16. Who am 1? S. Which list of elements contains a metal, a metalloid, and a nonmetal. Four students were asked to complete a table for a science assignment. Which statement BEST describes the organization of the periodic table of the elements? Say what? Elements can be classified by their estate at room temperature; by whiter they exist in nature; and by wherever they are metals, nonmetals, or metalloids In general what happens to the reactivity of elements in groups labeled A as atomic numbers increases across a period Matter and Its States . The first three elements in this group are nonmetals. In which group of elements do the atoms gain electrons most readily? Moving to group 7, fluorine and chlorine are gases. They are followed by one metalloid and one metal. Genrally metals and metaloids (semi-metals, what ever you want to call them) are solid at room temperature. 5. First, room temperature is assumed to be 25 degrees Celsius. Which element is liquid at room temperature? A)K B)I2 C)Hg D)Mg . The element with atomic number 56 is barium, a group 2 alkaline earth metal. A. As group 7 elements get darker down the group fluorine must be the lightest and astatine the darkest. As a group, halogens exhibit highly variable physical properties. Liquid- Bromine. Fluorine has the highest electronegativity of all elements. Phase at Room Temperature: Expected to be a Solid. Tags: Question 16 . Due to relatively weak intermolecular forces, chlorine and fluorine form part of the group known as "elemental gases". 17. gas/liquid: red-brown solid: metallic luster. As atoms get bigger down groups their intermolecular forces grow stronger. It consists of simple, small molecules. It is the only element to exist at room temperature as a diatomic gas. Solid Up to date, curated data provided by Mathematica 's ElementData function from Wolfram Research, Inc. Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here! What element has the chemical symbol Ir? 14. It is the lightest element. Named in honor of the Lawrence Livermore National Laboratory. 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