94 elements occur naturally on earth, either as the pure element or more commonly as a component in compounds. 80 elements have stable isotopes, namely all elements with atomic numbers 1 to 82, except elements 43 and 61 (technetium and promethium). Elements with atomic numbers 83 or higher ...
There are 92 naturally occurring elements and scientists have made more, bringing the total to 114 confirmed and at least 4 more claimed. Atoms are the smallest unit of an element that chemically behaves the same way the element does. 4 How XRF works Anatomy of the atom* In the center of...
there's one missing that you might have expected to be there: the 43rd one,Technetium, a shiny, gray metal as dense as lead with a melting point of over 3,000 °F, that simply doesn't occur naturally on our world.
A“functional group” includes but is not limited to one or more amino acids, e.g., a naturally occurring amino acid or a non-natural amino acid, a peptide or polypeptide (protein) including an antibody or a fragment thereof, a His-tag, a FLAG tag, a Strep-tag, an enzyme, a cofact...
What is the name of this element? a) 137 amu; barium b) 99 amu; technetium c) 99 amu; radon d) 142 amu; einsteinium Find the atomic mass and mass number of an atom with 6 protons and 8 neutrons.Explore our homework question...