Examlex
Vector = 6.0 m and points 30° south of east. Vector
= 4.0 m and points 30° north of west. The resultant vector
+
is given by
Valence Electrons
Electrons in the outer shell of an atom that are available for bonding with other atoms.
Nucleus
The center or middle.
Atom Contains
Atoms consist of a nucleus made of protons and neutrons, surrounded by electrons in orbital shells.
Atomic Number
The atomic number is equal to the number of protons (positively charged particles) in the nucleus of an atom.
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