Table of Contents
What element has an electron configuration of 1s2 2s2 2p6 3s1?
Electron Configurations
| A | B |
|---|---|
| Fluorine | 1s2 2s2 2p5 |
| Neon | 1s2 2s2 2p6 |
| Sodium | 1s2 2s2 2p6 3s1 |
| Magnesium | 1s2 2s2 2p6 3s2 |
Which atom can form anion Why?
Metallic atoms hold some of their electrons relatively loosely. Consequently, they tend to lose electrons and form cations. Conversely, most nonmetallic atoms attract electrons more strongly than metallic atoms, and so gain electrons to form anions.
What element has the electron configuration 3s1?
Na: [Ne] 3s1 • [Ne] represents the electron configuration of neon.
What does the electronic configuration 1s2 2s2 2p5 3s1 indicate?
Ground state of flurine atom. The ground state of neon is 1s22s22p6.
What is electron configuration of K?
[Ar] 4s¹
Potassium/Electron configuration
When anion is formed?
Anions are formed when an atom gains one or more electrons: the gain of the negatively-charged electron(s) results in an overall negative charge.
What is anion in chemistry?
anion, atom or group of atoms carrying a negative electric charge. See ion.
What is the electronic configuration of Cu 2?
The electronic configuration of Cu2+ is [Ar]3d9.
What is the electron configuration of 1s2 2s22p6 3S1?
The sum of the electrons in 1s2 2s2 2p6 3s1 = 2 + 2 + 6 + 1 and this is the electron configuration of sodium. Sodium does not form anions (it is an alkali metal so the only ion it can form is when it loses its one valence electron and this is a 1+ cation).
How many valence electrons does oxygen have in a 2+ ion?
Oxygen has 6 valence electrons and it can gain two more to form a stable Noble Gas structure, hence it can form a 2+ ion. The sum of the electrons in 1s2 2s2 2p6 3s1 = 2 + 2 + 6 + 1 and this is the electron configuration of sodium.
Is oxygen a cation or anion?
Oxygen has 6 valence electrons and it can gain two more to form a stable Noble Gas structure, hence it can form a 2+ ion. Generally, atoms whose configurations have 3 or more electrons in the p sub level form anions. The first one is Sodium (Na), which readily forms a cation in a compound.
What is the electron configuration of oxygen in sodium ion?
Sodium does not form anions (it is an alkali metal so the only ion it can form is when it loses its one valence electron and this is a 1+ cation). The sum of the electrons in 1s2 2s2 2p4 = 8 and this is the electron configuration of oxygen.