Each bundle of nerve fibers is called a fasciculus and is surrounded by a layer of connective tissue called the perineurium.
1s2 2s2 2p6 3s2 3p6 4s2 3d7
Answer:
The number of electrons in the outermost shell of a particular atom determines its reactivity, or tendency to form chemical bonds with other atoms. This outermost shell is known as the valence shell, and the electrons found in it are called valence electrons.
Explanation:
Answer:
atoms have a positive nucleus and negative electrons,an atoms electron configuration the outermost electrons determines how the atom can interact with the other atoms and atom forms another atom for sharing electrons.