DAT-3000 Lecture Notes - Lecture 1: Unified Atomic Mass Unit, Francium, Alkaline Earth Metal

• School: Algonquin College
• Department: Information & Communications Technology
• Course: DAT-3000
• Professor: heh

Document Summary

The atomic number is defined as the number of protons in the nucleus, all fluorescent lights, when analyzed in a spectrometer, exhibit the same lines in the yellow, green, and blue spectral regions. Because nuclear charge from bottom to top in a chemical family: francium is the most reactive element out of helium, radon, francium, hydrogen and ununoctium, electronegativity is derived from reactivity, element y is likely a group 2 element. 14. electronegativity is the measure of attraction between a nucleus and electrons in a bond. It decreases as you go down the periodic table due to the greater number of outer shell electrons, which are further away from the nucleus. Electronegativity stays generally the same going down a row of the periodic table. But going down a periodic table, electronegativity increases due to greater atom size. (and therefore, greater number of electrons. ) Ionization energy is the quantity of energy required to discharge an electron.