Gino made a table to describe parts of the electromagnetic spectrum. Wave
Ultraviolet
Radio waves
Infrared
X-rays
Frequency
High
Very low
Low
High
Wavelength
Long
Very long
Long
Short
What mistake did Gino make?
X-rays should have a low frequency and a long wavelength.
Infrared light should have a high frequency, not a low frequency.
Radio waves should have a very high frequency and a very short wavelength.
Ultraviolet light should have a short wavelength, not a long wavelength.

it is to be noted that an alpha particle is an helium nucleus. so it contains 2 protons 2 neutrons and has a mass number of 4. when alpha decay particles are ejected from the nucleus it gets transformed into an atom which has atomic number less than 2 and a mass number less than 4.

an equation that could represent alpha decay is radium 226 decay of alpha particle forms radon 222.

→

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.