Polyatomic ions describes ions which are posses more than one atom. Hence, the formula which represents a polyatomic atomic ion is 
- Sulphates contain both Sulphur and Oxygen atoms, hence, they contain two atoms, thus they are polyatomic.
- Sulphide are represented as
; containing only Sulphur atom, hence, they are mono atomic.
- Chlorides are represented as
; containing only chlorine atoms, hence, they are mono atomic.
- Nitrides are represented as
; containing only Nitrogen atom, hence, they are also mono atomic.
Therefore, sulphates are polyatomic as they contain more than one atom.
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Answer:
Explanation:
A person's livelihood refers to their "means of securing the basic necessities of life". Livelihood is defined as a set of activities essential to everyday life that are conducted over one's life span. Such activities could include securing water, food, fodder, medicine, shelter, clothing.
Answer:
No solution: 7x+ any number except 5
One solution: any coefficient of x except 7x + any number
Infinitely many solution: 7x+5
Explanation:
The answer is East Asian Art, which is a visual or performing arts in China and Korea.
