WebAtomic number = number of protons Mass number An atom’s mass number is the total number of protons and neutrons. Mass number = number of protons + number of … Webproton, stable subatomic particle that has a positive charge equal in magnitude to a unit of electron charge and a rest mass of 1.67262 × 10−27 kg, which is 1,836 times the mass of …
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WebJul 7, 2024 · In an electrically neutral atom, the number of protons equals the number of neutrons. protons equals the number of electrons. neutrons equals the number of electrons. A. Protons equals the number of neutrons B. Protons equal the number of electrons C. Neutrons equals the number of electrons Answer: B See answers incorrect. The answer is … WebJun 8, 2024 · Given an atomic number (Z) and mass number (A), you can find the number of protons, neutrons, and electrons in a neutral atom. For example, a lithium atom (Z=3, A=7 amu) contains three protons (found from Z), three electrons (as the number of protons is equal to the number of electrons in an atom), and four neutrons (7 – 3 = 4). the perfect teacher dvd
In an atom, the atomic number of an atom is equal to the number …
WebThe atomic number of an atom is equal to: the number of neutrons in an atom. the number of neutrons and protons in an atom. the number of protons in an atom. O the number of electrons in an atom. the number of neutrons and electrons in … WebAccording to the law of conservation of mass, the total mass of reactants must be equal to the total mass of products. Consider a reaction: A + B ----> AB. Thus, if 2 grams of A … WebAccording to the law of conservation of mass, the total mass of reactants must be equal to the total mass of products. Consider a reaction: A + B ----> AB. Thus, if 2 grams of A combines with 3 grams of B, then mass of AB must be 5 grams in accordance with law of conservation of mass. Hence, option B is the answer. 18. sibongile khumalo ancient evening