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Why is melting point of magnesium less than calcium although melting point decrease down the group?
The melting point of magnesium is lower than calcium because although melting points generally decrease down a group, there can be exceptions due to variations in atomic size, packing efficiency, and bonding forces. In this case, the smaller size and stronger metallic bonding in calcium result in a higher melting point compared to magnesium, despite being further down the group.
How would the formula of the oxide be influence if impure magnesium was used?
The formula of the magnesium oxide formed would not change at all if impure magnesium was used, but less of the magnesium oxide would be formed than if the same amount of pure magnesium had been used. Depending on the chemical nature of the impurities, other products might be formed, or the impurity might simply remain as a contaminant of the magnesium oxide.
Would magnesium and iron nitrate react?
No, as magnesium is more reactive, and would 'keep' the nitrate.
Is the magnesium in part B more or less stable than it is in part A?
The magnesium in part B is more stable than in part A because it is in the form of magnesium sulfate (MgSO4), which is a stable compound. In contrast, the magnesium in part A is likely in a more reactive form, such as magnesium metal or magnesium oxide, which can react with air or water.
Why is cryolite used in the manufacture of aluminium?
It's used as a flux. It melts at a significantly lower temperature than aluminum oxide ores, but they will dissolve in molten cryolite. This means less energy is required to extract the aluminum from the ores than if they had to be heated to their melting temperatures.
Why is melting point of magnesium less than calcium although melting point decrease down the group?
The melting point of magnesium is lower than calcium because although melting points generally decrease down a group, there can be exceptions due to variations in atomic size, packing efficiency, and bonding forces. In this case, the smaller size and stronger metallic bonding in calcium result in a higher melting point compared to magnesium, despite being further down the group.
How would the formula of the oxide be influence if impure magnesium was used?
The formula of the magnesium oxide formed would not change at all if impure magnesium was used, but less of the magnesium oxide would be formed than if the same amount of pure magnesium had been used. Depending on the chemical nature of the impurities, other products might be formed, or the impurity might simply remain as a contaminant of the magnesium oxide.
Why is magnesium oxide insoluble in water?
Magnesium oxide in fact is soluble in water but very little. it means that if you put magnesium in water and fitrate and repeat this a few times you can realize that you don"t have the same amount that you started with. the reason why magnesium oxide is less soluble in water than other metals oxide, is due to the intramolecualr force within the magnesium oxide compound. In fact, magnesium oxide is very small, and the attaction forces are very strong to be broke apart when reacted with water.
Which noble gas has an electron structure like the ions in magnesium oxide?
Neon: In forming magnesium oxide from the elements, two electrons leave each magnesium atom and transfer to an oxygen atom. Therefore, both the magnesium cation and the oxygen anion have the electron configuration of neon, which has an atomic number 2 greater than oxygen and 2 less than magnesium.
When the observed melting point is less than the stanadr value what inference will you get?
The substance whose melting point is being observed is impure.
Would magnesium and iron nitrate react?
No, as magnesium is more reactive, and would 'keep' the nitrate.
A material with a melting point less than room temperature?
One example of a material with a melting point less than room temperature is gallium, which melts at 85.57°F (29.76°C). Gallium is a metal that can melt in your hand due to its low melting point, making it a popular choice for demonstrating the concept of melting point in science experiments.
Is sodium chloride having more or less melting and boiling point?
More or less of a melting and boiling point than what? Water? Iron? Hydrogen? More information needs to be provided before this can be answered.
What happens to a magnesium strip when put into a flame?
A White Spark Appears As A Chemical Reaction Takes Place In oxygen, it will react to form MgO (magnesium oxide) In nitrogen, it will react to form Mg3N2 (magnesium nitride) In carbon dioxide, it will react to form MgO and CO2 (carbon dioxide)
Is the magnesium in part B more or less stable than it is in part A?
The magnesium in part B is more stable than in part A because it is in the form of magnesium sulfate (MgSO4), which is a stable compound. In contrast, the magnesium in part A is likely in a more reactive form, such as magnesium metal or magnesium oxide, which can react with air or water.
Why is cryolite used in the manufacture of aluminium?
It's used as a flux. It melts at a significantly lower temperature than aluminum oxide ores, but they will dissolve in molten cryolite. This means less energy is required to extract the aluminum from the ores than if they had to be heated to their melting temperatures.
How do you know that magnesium is the more metallic element in the compound magnesium oxide MgO?
Magnesium is an element, a metal. It is silvery grey in colour and has lustre.whereas Magnesium Oxide is a compound made from reaction of magnesium and oxygen. It is a powdery substance and is white in colour
