The electron configuration of Technetium is * O 152 2s22p5 352 3p6 3d7
O 152 252 2p6 352 3p6 452 310 4p6 5s2 4d5
0 152 282 2p6 352 3p6 482 305
152 252 2p6 352 3p6 482 4p5

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

What are the genotypic and phenotypic ratios

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?