Question

the main constituent of neon sign bulb​

Answer 1

Answer:

Neon Since bulb is made out of it!

Explanation:

Answer 2

Answer:

The gas is typically a Penning mixture, 99.5% neon and 0.5% argon, which has lower striking voltage than pure neon, at a pressure of 1-20 torrs (0.13-2.67 kPa).

The lamp glow discharge lights at its striking voltage.