The transition metal with the highest melting point is:
Step 1: Understanding Melting Points in Transition Metals - Transition metals have high melting points due to strong metallic bonding and partially filled d-orbitals. - Among all transition metals, tungsten (\( W \)) has the highest melting point. 
Step 2: Comparing Melting Points - Tungsten (\( W \)) has a melting point of 3422°C, which is the highest among all transition metals.
- Other transition metals: - Rhenium (Re): 3186°C - Chromium (Cr): 1907°C - Molybdenum (Mo): 2623°C 
Step 3: Conclusion - Since tungsten (\( W \)) has the highest melting point, it is the correct answer.
If the roots of $\sqrt{\frac{1 - y}{y}} + \sqrt{\frac{y}{1 - y}} = \frac{5}{2}$ are $\alpha$ and $\beta$ ($\beta > \alpha$) and the equation $(\alpha + \beta)x^4 - 25\alpha \beta x^2 + (\gamma + \beta - \alpha) = 0$ has real roots, then a possible value of $y$ is: