Which of the listed properties are the same for the elements carbon (c), nitrogen (n), and oxygen (o)?

hint: look at your periodic table.

number of protons
number of energy levels
number of neutrons
number of valence electrons

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

un recipient conține 6,4 moli de gaz. gazul hidrogen reprezintă 25% din totalul kilometrilor din container. în cazul în care presiunea totală este de 1.24 atm ceea ce este