Answer:
rotor
Explanation:
The part of the motor being pointed to is called the <em>rotor</em>.
What is the chemical formula for the compound formed between chromium(iii) and the sulfate ion
2 answers:
<u>Answer:</u> The chemical formula of the given compound is
<u>Explanation:</u>
The combination of chromium and sulfate ions leads to the formation of an ionic compound having chemical name as chromium (III) sulfate. The electrons get transferred from chromium atom to sulfate ion.
Chromium is the 24th element of the periodic table. It is a metal and it looses its electrons. The electronic configuration for this element is
This element will loose 3 electrons and forms ion.
Sulfate ion is a polyatomic ion having chemical formula of
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.
So, the chemical formula for chromium (III) sulfate is
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Answer:-
Explanations:- Lattice energy depends on two factors, charge and size.
High charge and small size gives higher lattice energy where as low charge and bigger size gives lower lattice energy.
in LiCl, NaCl and KCl, the anion is same and also the charges for Li, Na and K are also same. The deciding factor here is the size of cations. Since the size increases as we move down a group, the order of size of these three atoms is Li<Na<K.
The order of lattice energy is exactly opposite as it's increases as the size decreases.
Now, if we look at magnesium chloride and strontium chloride then again the anion is common but the metals have higher charge as compared to the alkali metals(Li, Na and K). So, lattice energy values must be higher for these two compounds. If we compare Mg and Sr then size of Mg is smaller and so the lattice energy would be greater for this.
Hence, the increasing order of lattice energy is .