Match the following elements with their correct classifications:

Element classifications:
- Technetium is a Transition metal.
- Fluorine is a Non-metal.
- Tellurium is a Metalloid.
- Dysprosium is a Lanthanoid.
If uncertainty in position and momentum of an electron are equal, then uncertainty in its velocity is:
The graph shown below represents the variation of probability density, \( \Psi(r) \), with distance \( r \) of the electron from the nucleus. This represents:

The volume of an ideal gas contracts from 10.0 L to 2.0 L under an applied pressure of 2.0 atm. During contraction, the system also evolved 90 J of heat. The change in internal energy (in J) involved in the system is (1 L·atm = 101.3 J):