$v_x\mathbf{i}$
$v_y\mathbf{j}$
$v_z\mathbf{k}$
\begin{align*}
\color{black}\mathbf{v}~ &\color{black}= \langle v_x,v_y,v_z \rangle \\
&\color{black}= \langle 2,5,3 \rangle \\
\color{green}v_x\mathbf{i}~ &\color{green}= \langle 2,0,0 \rangle \\
\color{red}v_y\mathbf{j}~ &\color{red}= \langle 0,5,0 \rangle \\
\color{blue}v_z\mathbf{k} &\color{blue}= \langle 0,0,3 \rangle
\end{align*}