Question

how many elements are present in this compound?
5 ch₃ona
6
15
4
30

Explanation:

Step1: Identify elements in \(CH_3ONa\)

Elements are represented by their symbols. In \(CH_3ONa\), \(C\) (carbon), \(H\) (hydrogen), \(O\) (oxygen), \(Na\) (sodium) are present. The coefficient \(5\) in \(5CH_3ONa\) only indicates the number of formula units of the compound and does not add new elements.

Step2: Count the number of elements

There are \(4\) distinct elements (\(C\), \(H\), \(O\), \(Na\)).

Answer:

C. 4