Lithium (\( Li \)) exhibits the highest standard reduction potential, classifying it as the strongest oxidizing agent with \( E^\circ_{\text{Li}} = -3.04 \, \text{V} \).
This is because \( Li \) readily donates its single valence electron, resulting in high reactivity.
Elements such as \( Cu \), \( Al \), and \( Mg \) possess weaker oxidizing potentials.
The reading of pressure metre attached with a closed pipe is \( 4.5 \times 10^4 \, N/m^2 \). On opening the valve, water starts flowing and the reading of pressure metre falls to \( 2.0 \times 10^4 \, N/m^2 \). The velocity of water is found to be \( \sqrt{V} \, m/s \). The value of \( V \) is _____.