Answer: Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
Explanation: Atoms consist of three basic particles: protons, electrons, and neurons.
In capillaries, the outer tunics of smooth muscle cells are absent and only the endothelium is present. Capillaries are often invested in pericapillary contractile cells called pericytes. The layer of endothelial cells is a type of epithelium and is bounded at its outer surface by a basement membrane.
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Igneous rocks<span> form from cooling magma or </span>lava<span>. </span>Sedimentary rocks<span> form when </span>sediments<span> settle out of </span>fluid<span>or air and become cemented together. </span>Metamorphic rocks<span> form when rocks are exposed to heat, pressure and/or </span>hydrothermal<span> solutions.</span>
An ionic bond results in an exchange or transfer of electrons between the 2 different types of atoms, most likely the metal atom and nonmetal one.
For example the compound NaF is held together by electrostatic forces of positive and negative charges due to the transfer of electrons from the sodium to fluoride atom.
