Chemistry, 08.07.2019 14:30 kayranicole1

Match the following families on the periodic table with the description. brainliest for the first right answer!

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Answer from: alani64

Explanation:

Elements of group 1 are known as alkali metals and these include elements like lithium, sodium, potassium, rubidium, cesium, and francium.

Halogens are the elements of group 17 and each element of this group contains 7 valence electrons. For example, fluorine, chlorine, bromine, and iodine are all halogens.

Group 3-12 contains elements like scandium, titanium, vanadium, chromium etc. All these elements are also known as transition elements.

Noble gases are the gases that belong to group 18. Elements of this group are helium, neon, argon, krypton, xenon etc. All the gases are compressible in nature as they have large gaps between each molecule. Hence, they are easily compressible.

Elements of group 2, that is, alkaline earth metals contain two valence electrons. Elements of this group are beryllium, calcium, magnesium, strontium etc.

Thus, given families are matched as follows.

Group 1 - Alkali metalsNon-metals with 7 valence electrons - HalogensGroup 3-12 - Transition metalsCompressible gases at room temperature - Noble gasesMetals that lose two electrons with forming ions - Alkaline earth metals

Answer from: Quest

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃ → 3 nicl₂ + 2 albarium and copper bromideba + cubr → no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn → znso₄ + na

Answer from: Quest

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