The answer & explanation for this question is given in the attachment below.
Answer:
Lead (II) Sulfate
Explanation:
Don't forget to add the (II) marking indicating that lead has a charge of 2+ (because Sulfate has a charge of 2-, balancing the ion).
The element in period 4 of the Periodic Table with the highest electronegativity is krypton (2.96).
Air does move from high to low pressure so true