29. In valence electronic configuration 3s², 3 represents
a. principal quantum number
azimuthal quantum number
spin quantum number
d. magnetic quantum number​

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? ?

b.

the accuracy of the data.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)