Answer:
The answer to your question is a) Covalent b) Ionic
Explanation:
Data
Kind of bond between C - C
kind of bond between Mg -Cl
Process
1.- Look for the electronegativities of these elements
Carbon electronegativity = 2.55
Magnesium electronegativity = 1.31
Chlorine electronegativity = 3.16
2.- Calculate the difference of electronegativities
a) C - C = 2.55 - 2.55 = 0
b) Mg - Cl = 3.16 - 1.31 = 1.85
3.- Kind of bond
a) It's covalent because the difference of electronegativity was lower than
1.5.
b) It's ionic because the difference of electronegativity was higher than 1.5.
Reaction on positive electrode (cathode):
PbSO₄₍s₎ + 2H₂O₍l₎ → 2e⁻ + PbO₂₍s₎ + 4H⁺₍aq₎ + SO₄²⁻₍aq₎.
s - solid.
l - liquid.
aq - dissolve in water.
PbSO4 is converted to Pb at one electrode (anode) and to PbO₂ at the other (cathode). Lead battery can be recharged, during recharging, an external source of energy is used.
A chemical symbol designates an element that belongs to the periodic table.
A chemical formula combines two or more symbols and it represents a chemical compound. We notice that the chemical symbols are followed oftenly by a subscript that represents the mole proprtions of next element.
Cause (a substance) to be deposited in solid form from a solution.