Question

drag the chemical expression to the number of atoms. > get help here zncl₂ 2hcl zn h₂ one atom two atoms three atoms four atoms

Explanation:

Step1: Analyze ZnCl₂

ZnCl₂ has 1 zinc (Zn) atom and 2 chlorine (Cl) atoms, so in total 1 + 2=3 atoms.

Step2: Analyze 2HCl

The coefficient 2 means there are 2 molecules of HCl. Each HCl has 1 hydrogen (H) and 1 chlorine (Cl) atom. So in total 2×(1 + 1)=4 atoms.

Step3: Analyze Zn

Zn represents a single - atom element, so 1 atom.

Step4: Analyze H₂

H₂ has 2 hydrogen atoms.

Answer:

ZnCl₂ - three atoms
2HCl - four atoms
Zn - one atom
H₂ - two atoms