What Is the Current Official Name for Element 109

question 17

Multiple Choice

What is the current official name for element 109?

• A)copernicium
• B)darmstadtium
• C)meitnerium
• D)roentgenium
• E)none of the above

---

Definitions:

Pump

A mechanical device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action.

V/F Principle

The principle that states the ratio of voltage to frequency (V/F) should remain constant for AC drives to maintain torque.

Voltage

An electrical measurement expressing the potential difference between two points in a circuit, typically driving current flow.

Regeneration

The process of recovering energy from a system, often from braking or decelerating, and reusing it to improve efficiency.