Always ensure that the operands in concatenation operations are of the same data type. Use str() to convert integers to strings if needed.
print("A"*3)
print(5*3)
print("15" + 3)
print("15" + "13")
"A"*3
repeats the string "A" three times, resulting in "AAA"
.5*3
performs integer multiplication, resulting in 15
."15" + "13"
concatenates two strings, resulting in "1513"
."15" + 3
raises a TypeError because Python does not allow concatenation of a string ("15") and an integer (3).The correct IUPAC name of \([ \text{Pt}(\text{NH}_3)_2\text{Cl}_2 ]^{2+} \) is: