The noun quantum is a singularnoun. The plural form is quanta.
A possessive noun requires the use of an apostrophe.
The singular possessive form is quantum's. The plural possessive form is quanta's.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
The noun quantum is the singular form; the plural is quanta.
The plural possessive is masses'.
The plural form of the noun light is lights.The plural possessive form is lights'.
Quantumes
The plural is runners-up. The plural possessive is runners-up's.
Quantum is singular, not singular possessive. The singular possessive form is quantum's.
I would have to answer all three, depending upon which context the term is meant to be conveyed.
The ladie's club is not a correct possessive form.The noun ladies is the plural noun.The possessive form of the plural noun is ladies'.The correct plural possessive form is the ladies' club.The noun lady is the singular noun.The correct singular possessive form is a lady's club(a golf club intended for a female).
Coaster's is singular possessive. The plural is coasters, the plural possessive is coasters'.
The correct form is "its" for the possessive form in the plural. "Its" is used for both the singular and plural possessive forms, without an apostrophe.
The term 'lovely looking' is a combination of adjectives; adjectives do not have a possessive form. Nouns and pronouns are the words that have possessive forms.
The plural form of the noun artist is artists.The plural possessive form is artists' materials.
The plural is briefs. The plural possessive is briefs'.
The plural is lads. The plural possessive is lads'.
The plural is trollies. The plural possessive is trollies'.
The plural is stations. The plural possessive is stations'.