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Hace 9 horas · Pennsylvania (/ ˌ p ɛ n s ɪ l ˈ v eɪ n i ə / ⓘ, lit. ' Penn's forest country '), officially the Commonwealth of Pennsylvania (Pennsylvania Dutch: Pennsylvanie), is a landlocked state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.Pennsylvania borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest ...
Hace 1 día · The neutron is a subatomic particle, symbol n or n 0, which has a neutral (not positive or negative) charge, and a mass slightly greater than that of a proton.Protons and neutrons constitute the nuclei of atoms.Since protons and neutrons behave similarly within the nucleus, they are both referred to as nucleons.Nucleons have a mass of approximately one atomic mass unit, or dalton (symbol: Da).
