Tungsten (W) has an atomic number of 74, meaning it has 74 electrons. Here's how to determine the number of electrons in its outer shell:

1. Electron Configuration: The electron configuration of tungsten is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f¹⁴ 5d⁴

2. Outermost Shell: The highest principal quantum number (n) in the configuration is 6, so the outermost shell is the 6th shell.

3. Outer Electrons: The 6th shell has 2 electrons (6s²).

Therefore, there are 2 electrons in the outer shell of tungsten.