How many protons and electrons are present in o2

The oxygen atom has therefore 8 neutrons, 8 protons and 8 electrons. Due to this oxygen ion is having an octet of valence electrons. Explanation: Oxygen has an atomic number of 8 , and the mass number of an atom is the sum of its atomic number plus its neutron number.

Oxygen, O. Oxygen is in Group 6. It has six electrons in its outer shell. It gains two electrons from one or two other atoms in reactions, forming an oxide ion, O An oxygen atom needs two extra electrons to fill its outer shell. This gives the oxygen the extra electrons it needs. And, the hydrogen atoms get what they need, too. This results in an atom with a net charge i. Answer 4: In an oxygen atom, there are 8 protons and 8 electrons.

Most oxygen atoms also have 8 neutrons, but it is possible for an oxygen atom to have 9 or 10 neutrons. So although chlorine has a mass number of 35 which means it has 18 neutrons, it can also have a mass number of 37, which means it has 20 neutrons.

This tells us that in an atom of K there are 19 protons and 19 electrons. The plus sign indicates that there is one more proton than electron in this ion. A neutral oxygen atom will also have eight electrons. This results in the oxygen ion having an octet 8 of valence electrons. How many protons and how many electrons are in an oxygen ion that has a -2 charge? Chemistry Matter Elements. Dec 30, Oxygen is in the 6A group which means that oxygen has 6 valence electrons.

How many electrons, protons, valence electrons, and neutrons are in Oxygen? Answer 1: The Periodic Table of elements can tell you a lot about the elements. If you click on the symbol in the periodic table at this web site here You will find that the atomic weight of oxygen is about Since the weight of the protons and neutrons is about 1 the electrons weigh almost nothing compared to protons and neutrons and we know we have 8 protons in the nucleus, we can calculate the number of neutrons by subtracting 8 from 16 16 - 8 which equals 8.

The oxygen atom has therefore 8 neutrons, 8 protons and 8 electrons. The neutrons, of course, are neutral. Now you can figure out how many electrons, protons and neutrons Oxygen has: Atomic number which is always the smaller of the two numbers is 8.

Hence 8 protons.