Which of the following is NOT a property of the halogens (group 7 elements)?Low densityLow melting pointConduct electricityReactivity decreases down the group
Question
Which of the following is NOT a property of the halogens (group 7 elements)?Low densityLow melting pointConduct electricityReactivity decreases down the group
Solution
The property that is NOT true for halogens (group 7 elements) is "Conduct electricity". Halogens are poor conductors of electricity. Here's why:
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Halogens are non-metals: Non-metals are generally poor conductors of heat and electricity. This is because they lack free electrons that can move and carry an electric charge.
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State at room temperature: Halogens can be found in all three states of matter at room temperature (solid, liquid, and gas). However, none of these states conduct electricity well.
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Electron configuration: Halogens have seven electrons in their outermost shell. They tend to gain an electron to achieve a stable electron configuration, rather than lose or share electrons to conduct electricity.
So, while halogens do have low density, low melting points, and their reactivity decreases down the group, they do not conduct electricity well.
Similar Questions
State 3 properties of the halogens (group 7)
Group 7 elements react by gaining an electron in their outer shell. Why does their reactivity decrease as you go down the group?The outer shell becomes further away from the nucleus, so it is easier to gain an electronThe outer shell becomes closer to the nucleus, so it is harder to gain an electronThe outer shell becomes further away from the nucleus, so it is harder to gain an electronThe outer shell becomes closer to the nucleus, so it is easier to gain an electron2Which halogen is a liquid at room temperature?BromineChlorineIodineFluorine3The halogens exist as:Positive ionsNegative ionsMolecules made of pairs of atoms joined by a covalent bondMolecules made of pairs of atoms joined by an ionic bond4A chemical reaction in which a more reactive element takes the compound away from a less reactive element is known as:CombustionReductionDisplacementOxidation5What will happen when chlorine solution is added to sodium iodide solution?Iodine is producedChlorine gas is producedAn explosionNo reaction6Which of the following is a balanced symbol equation for the reaction of chlorine solution with sodium bromide solution?Cl + NaBr → NaCl + BrCl2 + NaBr → NaCl + Br22Cl + 2NaBr → 2NaCl + 2BrCl2 + 2NaBr → 2NaCl + Br2
What group/family of elements possesses very reactive property in their elemental form, very soft, lustrous, and form compounds with the halogens?Group of answer choicesHalogensAlkaline-earth metalsAlkali MetalsCarbon Group
Which two of these properties are seen in group 7 elements?
Do the melting and boiling points of the halogens increase or decrease as you go down the group?
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