Most people have heard of Carbon-14 dating, but it is a wide misconception that this method provides proof that the earth is millions of years old. Even if we don’t consider the assumptions on which Carbon dating is based, this process is still unable to provide dates more than 100,000 years into the past. This is because C-14 has such a fast decay rate. Every 5,730 year, half of the C-14 in a specimen will have decayed into Nitrogen. This is called a half-life. In another 5,730 years, another half will have decayed. After about 100,000 years, there would not be enough C-14 present to detect with modern instruments.
There are five other radiometric dating methods that use elements with longer half-lives (uranium-238, uranium-235, potassium-40, rubidium-87, and samarium-147). These are the ones that produce readings of millions of years. But Carbon dating actually undermines these figures.
Wood has been found trapped within lava flows that date into the millions of years. But this wood still has detectable amounts of C-14 in it. If it was actually millions of years old, the Carbon would be long gone. Coal and diamonds have been found in rock layers dated in the millions of years. However, both coal and diamonds were found to contain C-14. It is physically impossible for these things to be more than 100,000 years old.
Let me assert that radiometric dating is not as reliable as we have been told.