Answer: A. Is decomposition
B. Is synthesis where Na combines with Cl to form NaCl
C. Is single displacement or replacement. Mg displaces Cu.
Explanation:
In 2009, the US Geological Survey estimated the Arctic may be home to 30% of the planet's natural gas reserves and 13% of oil.
Step 1:
Calculate the ionic charges on both atoms:
As Strontium belongs to Group-II in periodic table so it will tend to loose two electrons and form Sr⁺² , i.e.
Sr → Sr⁺² + 2 e⁻
While, Se belonging to Group-VI will tend to gain two electrons and form Se⁻², i.e.
Se + 2 e⁻ → Se⁻²
Step 2:
Multiply the coefficient of each element by the charge of other element.
Se⁻² × 2 = 2 Se⁻² ∴ where 2 is charge on Sr
And,
Sr⁺² × 2 = 2 Sr⁺² ∴ where 2 is charge on Se
So, the formula comes out to be,
Sr₂Se₂
Or divide both coefficients by 2 to have a simplest form. i.e...
SrSe
Result:
One One <span>atoms of each element are needed to create an ionic compound of Strontium Selenide.</span>
Answer:
Sorry but I know only what ksf stand for
Explanation:
Ksf stand for solubility product constant
This is called as such because the proton or H+ has taken on both lone electron pairs on the oxygen in the water molecule. As such it is s coordinate covalent bond.