What is dark energy? Are there subatomic particles that are candidates for dark matter?

Jul 7, 2022 ... ... protons and neutrons that make up atomic nuclei. More rarely, however, they can also combine into four-quark and five-quark particles. These ... Dec 10, 2021 ... Which of the following are the subatomic particles that comprise the atom? Select all that apply. Check all that apply. Electron Neutron Proton ... The number of protons in an atom's nucleus identifies the atomic element. Atoms have a densely packed core—or nucleus—comprised of electrically neutral neutrons ... Aug 5, 2023 ... Which atom has a mass of 12 u? (1) A (2) E (3) G (4) J Solution: Mass of an atom is equal to the sum of protons and neutrons. Answer: 2 The three subatomic particles present in an atom are; protons, neutrons, and electrons. Protons have a charge of +1, neutrons have a charge of 0, and electrons ... According to modern atomic theory, an atom has a nucleus, which is its center, or core. The nucleus contains subatomic particles: protons and neutrons. Protons ... A never-before-seen subatomic particle has popped into existence inside the world's largest atom smasher, bringing physicists a step closer to unraveling the ... Atoms are made of even smaller particles. The center of an atom is called the nucleus. The nucleus is made up of particles called protons and neutrons. Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the ... Of the familiar particles that make up the atom, the electron is a lepton. ... It holds quarks together to make protons, neutrons and more exotic large particles.