WebWhich of the following lists animals in order of increasing brain complexity? A. amphibian, fish, mammal B. fish, amphibian, mammal C. mammal, amphibian, fish D. mammal, … Web1 mei 2024 · Mg has atomic number 12, so it has 12 protons. It has an atomic mass of 24.3 amu (atomic mass units). Protons and neutrons are 1 amu each. Electrons are close to 0 amu, and are included in the mass weight calculations. It there are 12 protons, at 1 amu each, we can subtract 12 from the atomic mass of 24.3 to get 12.3.
How Many Protons, Neutrons, and Electrons in an Atom?
WebProtons 33 Neutrons 42 Electrons 33 Calculate the number of protons, neutrons, and electrons in an atom of fluorine. The atomic symbol for the fluorine atom is 19 F 9 … Web1st step. All steps. Final answer. Step 1/2. The atomic number of fluorine ( F) is 9, which means it has 9 protons in its nucleus when neutral. A neutral fluorine atom would have 9 electrons as well, since the number of electrons equals the number of protons in a neutral atom. View the full answer. Step 2/2. diagnosis code for chronic low back pain
4.4: Protons, Neutrons, and Electrons - Chemistry LibreTexts
WebThe atomic number of an element is equal to the number of protons and electrons in that element. Therefore, a nitrogen atom has seven protons and seven electrons. The number of neutrons in an atom can be determined by the difference between the atomic mass and the number of protons. WebMercury-198 is composed of 80 protons, 118 neutrons, and 80 electrons. Mercury-199 is composed of 80 protons, 119 neutrons, and 80 electrons. Mercury-200 is composed of 80 protons, 120 neutrons, and 80 electrons. Mercury-201 is composed of 80 protons, 121 neutrons, and 80 electrons. Web5 apr. 2024 · Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron. As a result, a neutral atom must have an equal number of protons and … cinfed online bill pay