An atom that has eight protons, seven neutrons and nine electrons is an oxygen atom because of the eight protons, seven neutrons makes it a particular isotope of oxygen, and with nine electrons means that it is an ion with a charge of minus one, this is unusual because oxygen tends to form ions with minus two not minus one
OVER 9000!!
It varies depending on the atom but basically there are the same number of neutrons as there are protons. Helium has two protons, two electrons, and two neutrons. The difference between the atomic mass and the atomic number equals the atom's number of neutrons. Consider hydrogen, for example. Standard hydrogen has no neutrons, just one proton. Deuterium is an isotope of hydrogen with one neutron, and tritium (which is unstable) has two neutrons. Carbon 12 has six protons and six neutrons, but carbon 14 (which is unstable) has six protons and eight neutrons. As you move up the periodic table, nuclei tend to have more neutrons than protons. 92 U 238, for example, has 146 neutrons.
Oxigen has 8 protons; natural isotopes have 8, 9 an 10 neutrons.
That would be an oxygen isotope and it's Atomic Mass would be 16. (Protons + Neutrons) The mass of an electron is so minuscule that it is not even factored into the mass.
A negative 2 charge means that the oxygen is richer in two electrons. The configuration of oxygen is: 1s22s22p4 and we can conclude that it has 8 electrons. For the atom to be neutral the amount of protons must be the same. Oxygen atom has 8 neutrons. Let's add the two electrons to the eight, so the oxygen will be on negative 2 charge. To summarize, the amount of electrons - 10, protons- 8, neutrons - 8.
To calculate atomic mass, only the amount of protons and neutrons will be summed. So eight protons plus nine electrons equals seventeen atomic mass units.
Oxygen-16 has 8 electrons and 8 neutrons.
OVER 9000!!
Neon
Oxygen because its atomic number is eight
The Atomic Mass is 17
It has eight protons, about eight neutrons, and about eight electrons. It looks like all other atoms do (Cloud model), but with those characteristics.
It varies depending on the atom but basically there are the same number of neutrons as there are protons. Helium has two protons, two electrons, and two neutrons. The difference between the atomic mass and the atomic number equals the atom's number of neutrons. Consider hydrogen, for example. Standard hydrogen has no neutrons, just one proton. Deuterium is an isotope of hydrogen with one neutron, and tritium (which is unstable) has two neutrons. Carbon 12 has six protons and six neutrons, but carbon 14 (which is unstable) has six protons and eight neutrons. As you move up the periodic table, nuclei tend to have more neutrons than protons. 92 U 238, for example, has 146 neutrons.
15
Oxigen has 8 protons; natural isotopes have 8, 9 an 10 neutrons.
That would be an oxygen isotope and it's Atomic Mass would be 16. (Protons + Neutrons) The mass of an electron is so minuscule that it is not even factored into the mass.
A negative 2 charge means that the oxygen is richer in two electrons. The configuration of oxygen is: 1s22s22p4 and we can conclude that it has 8 electrons. For the atom to be neutral the amount of protons must be the same. Oxygen atom has 8 neutrons. Let's add the two electrons to the eight, so the oxygen will be on negative 2 charge. To summarize, the amount of electrons - 10, protons- 8, neutrons - 8.