Question

which of the following elements are in the compound: *

n₂h₄ hydrazine

nitrogen (n) and helium (he)

nitrogen (n) and hydrogen (h)

sodium (na) and helium (he)

Explanation:

Step1: Analyze the chemical formula

The chemical formula of hydrazine is \(N_2H_4\). In a chemical formula, the symbols represent elements.

Step2: Identify the elements

The symbol \(N\) represents nitrogen and \(H\) represents hydrogen. There is no \(He\) (helium) or \(Na\) (sodium) in the formula \(N_2H_4\). So the elements in hydrazine are nitrogen (N) and hydrogen (H).

Answer:

B. Nitrogen (N) and Hydrogen (H)