What type of fingerprints are invisible to the naked eye? plastic fingerprints latent fingerprints visible fingerprints abbil fingerprints

The correct answer is Latent Finger print.

A finger print can be define as the impression that is left behind by the friction ridges of the human finger. A latent fingerprint is defined as the finger print that is not visible by naked eyes. This type of impressions can be seen after processing (chemical, physical). These impressions can be obtained from the blood, paint, motor oil, et cetera.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.