What is the mass of 1 atom of oxygen? - Toppr
网页1 mol oxygen atom contains 6.023 × 10 23 = 16 g Mass of ⇒ 6.023 × 10 23 oxygen atoms = 16 g Mass of 1 atom of oxygen = 16 g 6.023 × 10 23 = 2.66 × 10 − 23 g
What electron configuration represents an excited state?
网页2014年7月26日 · An excited state means that (typically) the valence electron has moved from its ground state orbital (i.e. lowest available energy) to some other higher energy orbital. So any electron configuration in which the last electron (again, the valence electron) is in a higher energy orbital, this element is said to be in an excited state. For example, if …
How many valence electrons does oxygen have? - Socratic
网页2014年4月15日 · Oxygen has 6 valence electrons. A way to remember this is to note that it is in column 16 of the periodic table. For the representative elements (columns 1, 2, 13-18), the digit in the units place of the column number is the same as the number of valence electrons. Elements in column 1 have one valence electrons, elements in column 13 …
How can an oxygen atom become an ion with a charge of -2?
网页Mar 13, 2018. Oxygen is in group six in the periodic table so it has six electrons in its valence shell. This means that it needs to gain two electrons to obey the octet rule and have a full outer shell of electrons (eight). Because electrons have a charge of 1-, adding two electrons would make the charge of the oxide ion 2-.
Why does oxygen form an O^(2-) ion and not an O^(3-) ion
网页2018年6月8日 · The electron configuration of "O"^ (2-) ensure the atom an octet and therefore high chemical stability whereas "O"^ (3-) doesn't. Ground-state oxygen atoms have electron shell arrangement (starting from the innermost principle energy level) 2, 6, color (grey) (0, 0, cdot cdot cdot) Each of the electron shells holds a different maximum …
What is the mass (in grams) of 1 atom of oxygen? - Toppr
网页Mass of 1 oxygen atom = 2.65 × 10 − 23 g. Was this answer helpful? 17.
What is the charge that results when oxygen becomes an ion?
网页2015年12月14日 · 1 Answer. Oxygen has 6 valence electrons. To fill up the valence shell, which (when in oxygen's row) has 8 electrons, an oxygen atom wants to gain 2 electrons. Since every electron has a single negative charge, the addition of two electrons results in an oxygen ion with a charge of −2. This is true of every other element located beneath ...
Valence Electrons - Chemistry - Socratic
网页The valence electrons are the electrons in the outermost electron shell of an atom. That is why elements whose atoms have the same number of valence electrons are grouped together in the Periodic Table. Generally, elements in Groups 1, 2, and 13 to 17 tend to react to form a closed shell, corresponding to the electron configuration s2p6.
An oxygen atom has a total of 8 elections. How do you write the 4 ...
网页2015年3月17日 · You know that a neutral oxygen atom has 8 electrons. It's always helpful to write the electron configuration for an element before trying to assign quantum numbers for each individual electron . As you can see in the image above, the electron configuration for neutral oxygen is "O": 1s^(2) 2s^(2) 2p^(4) Assuming you know the basics behind …
What are the correct number of electrons, protons and ... - Socratic
网页2018年2月13日 · Refer to the explanation. Oxygen has three stable isotopes, 99.76%""^16"O", 0.04%""^17"O", and 0.20%""^18"O". Oxygen has the atomic number 8, which means the nuclei of its atoms have 8 protons. A neutral oxygen atom as also has 8 electrons. The oxide anion has a charge of 2-. This means that it has gained two …