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Great question! You have to look at aluminum's electron configuration to see it. I'm not sure how far you are in chemistry... The configuration is 1s^2 2s^2 2p^6 3s^2 3p^1 If this is confusing for you, my apologies, I suggest you look up a picture accompanying this on Google. After you understand what aluminum looks like, you take a look at it's valence electrons, which is where I think the first problem lies. The oxidation number of aluminum is 3, because it has 3 valence electrons. The 3s orbital is filled and so it is very happy. The 3p sublevel wants 6 electrons (3 orbitals, 2 e- each), but it only has one. But all atoms want to be like their nearest noble gas, which has eight valence electrons (excluding helium). So even though the 3s subshell is happy, aluminum can be even happier if those two are gone. Hence, aluminum wants to get rid of the "loners" so that it is happier, and more stable. So that's why the oxidation number is 3, but I do believe the valency is 3 as well.
What else can I help you with?
How many covalency number are possible for sulfur?
Sulfur can exhibit a covalency number of 2, 4, or 6, depending on the molecule it is in. In H2S, sulfur has a covalency of 2, in SO2 it has a covalency of 4, and in SF6 it has a covalency of 6.
What is the covalency of carbon?
Carbon typically forms covalent bonds with other elements, sharing electrons to achieve a stable electron configuration. Each carbon atom can form up to four covalent bonds, resulting in a covalency of 4.
Is aluminum hydroxide a covalent bond or an ionic bond?
Aluminum hydroxide forms an ionic bond. Aluminum, as a metal, donates its electrons to oxygen and hydrogen atoms, forming positively charged aluminum ions and negatively charged hydroxide ions which are held together by electrostatic attraction.
Is zinc oxide covalent or ionic?
Zinc Oxide is ionic. Covalency arises between elements close to each other in their vertical groups in the Periodic Table.
Why boron trifluoride have maximum covalency is 4?
Boron trifluoride has a maximum covalency of 4 because boron has three valence electrons and each fluorine atom contributes one electron. This allows boron to form four covalent bonds by sharing its three electrons with three fluorine atoms and the fourth electron from one of the fluorine atoms. This results in a stable structure with each atom having a full outer electron shell.
How many covalency number are possible for sulfur?
Sulfur can exhibit a covalency number of 2, 4, or 6, depending on the molecule it is in. In H2S, sulfur has a covalency of 2, in SO2 it has a covalency of 4, and in SF6 it has a covalency of 6.
What is the covalency of sulphur?
Sulfur typically exhibits a covalency of 2, meaning it can form two covalent bonds with other atoms. However, in certain circumstances, sulfur can exhibit a covalency of up to 6 by utilizing its d-orbitals for bonding.
What is covalency of nitrogen in N2O5?
wcovalency means the max number of electron an atom can share with others. nitrogen can share 5 but due to the absence of d orbital it can only share 4. therefore the actual covalency in 4.
What is the covalency of carbon?
Carbon typically forms covalent bonds with other elements, sharing electrons to achieve a stable electron configuration. Each carbon atom can form up to four covalent bonds, resulting in a covalency of 4.
What benefit do you get from studying interstellar gas and dust?
It helps you understand the fundamental concepts of quantum physiology of the cosmos as well as cereptal covalency
Is aluminum hydroxide a covalent bond or an ionic bond?
Aluminum hydroxide forms an ionic bond. Aluminum, as a metal, donates its electrons to oxygen and hydrogen atoms, forming positively charged aluminum ions and negatively charged hydroxide ions which are held together by electrostatic attraction.
Is zinc oxide covalent or ionic?
Zinc Oxide is ionic. Covalency arises between elements close to each other in their vertical groups in the Periodic Table.
Does aluminum plus iodine forms aluminum oxide?
Aluminum and oxygen form aluminum oxide. Aluminum and iodine form aluminum iodide.
Is aluminum foil an element?
Aluminum foil is made of Aluminum, which is an element. So yes Aluminum foil is a element
Why boron trifluoride have maximum covalency is 4?
Boron trifluoride has a maximum covalency of 4 because boron has three valence electrons and each fluorine atom contributes one electron. This allows boron to form four covalent bonds by sharing its three electrons with three fluorine atoms and the fourth electron from one of the fluorine atoms. This results in a stable structure with each atom having a full outer electron shell.
What minerals are in aluminum foil?
No but it is made of aluminum which is the most prevalent element in the earth.
What type of metal is found in aluminum foil?
Aluminum foil is made of aluminum metal.
