What is the formula for M2O3?
= no. of shells so n = 3From the formula M2O3 its valency is 3. Since it is a metal its valence shell has 3 electrons.So its electronic configuration is 2 8 3Atomic number =13Hence the metal is Aluminum with valency 3. A metal M forms an oxide having the formula `M_2O_3.
Which element forms an oxide with the general formula M2O3?
From the formula M2O3 its valency is 3. Since it is a metal, its valence shell has 3 electrons. Hence the metal is Aluminum with valency 3.
What is the molar mass of M2O3?
In other words, the atomic mass of the metal is 24.3. By consulting a table of atomic masses, we see that the metal is magnesium. PRACTICE PROBLEM 11-6: The empirical formula of a metal oxide is M2O3. A 3.058-gram sample of the metal is burned in oxygen, and the M2O3 produced is found to have a mass of 4.111 grams.
What is the valency of M in metal oxide?
Solution. From the formula M 2 O 3 its valency is 3. Since it is a metal, its valence shell has 3 electrons.
Which metal M will form the oxide m2o3?
AluminumHence the metal is Aluminum with valency 3.
What is valency an atom M of an element reacts with oxygen to form m2o3 calculate the valency of the element M?
Answer: 3. As we know, that in the formula we wrote the subscript of M as 2 and O as 3, the valency of M is 3.
What is the molar mass of the metal?
For chemical elements without isolated molecules, such as carbon and metals, the molar mass is computed dividing by the number of moles of atoms instead. Thus, for example, the molar mass of iron is about 55.845 g/mol.
How do you find the molar mass of a metal?
To find the molar mass, add the atomic masses (atomic weights) of all of the atoms in the molecule. Find the atomic mass for each element by using the mass given in the Periodic Table or table of atomic weights.
What is valency of M2O3?
From the formula M2O3 its valency is 3. Since it is a metal, its valence shell has 3 electrons.
Why the common formula is Mo?
Since metallic oxide is MO hence metal must be in M2+ form therefore its nitrate will be M(NO3)2.
How can we calculate valency?
Mathematically we can say that if the outermost shell of an atom contains 4 or less than 4 electrons, then the valency of an element is equal to the number of electrons present in the outermost shell and if it is greater than 4, then the valency of an element is determined by subtracting the total number of electrons ...