Why can iron form fe3+ and fe2+?
It’s essentially about isolated atoms. Fe+2 and Fe+3 are ionization states of iron in molecules or solids. The ultimate reason why both kinds of ions are stable is that 3 electrons are weakly enough held to each Fe atom that they can be pulled away by strong electronegative neighbors, like oxygen.
What element is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1?
antimony
Which element has the noble gas configuration AR 4s2 3d10 4p5?
Neon is followed by Argon (Ar) , which has an atomic number of 18 ( 10+8 ). So the element with configuration (Ar) 4 s – 2 has atomic number 18+2=20. With prior knowledge of the periodic table, one can identify the element as Calcium (Ca -20).
What element has the electron configuration AR 3d5 4s2?
I am teaching my students how to write the electronic configuration of the elements of the periodic table. Thus, following the rules on how to fill the orbitals, the electronic configuration of iron (for example) is 1s2 2s2 2p6 3s2 3p6 4s2 3d6 , and it is abbreviated form [Ar] 4s2 3d6.
What element has the ground state electron configuration KR 5s24d105p1?
Answer Expert Verified From the periodic table, Kr has 36 electrons. Checking the periodic table, we will find that the element that has 49 electrons in its ground state is indium which has the formula In. Based on this, the answer is Indium.
Which element is predicted to have the ground state electron configuration shown below NE 3s2 3p4?
By looking up the periodic table, the element with an atomic number of 16 is sulfur (S). The element with the electron configuration of [Ne]3s23p4 is sulfur (S).
What is AR 3d2?
What species has the electron configuration [AR]3d2? Elements that can accommodate more than eight electrons in their valence shell occur only in of table row.
Which element has the noble gas notation Kr 5s2 4d2?
zirconium metal
What is XE 6s2?
Barium has the noble gas configuration [Xe]6s².
What element does ne 3s2 represent?
magnesium
What block is ne?
Fact box
| Group | 18 | −248.59°C, −415.46°F, 24.56 K |
|---|---|---|
| Block | p | 0.000825 |
| Atomic number | 10 | 20.180 |
| State at 20°C | Gas | 20Ne |
| Electron configuration | [He] 2s22p6 | 7440-01-9 |
What is XE 6s2 4f14 5d9?
The expected electron configuration for gold is is [Xe] 6s2 4f14 5d9 but it has been determined to be [Xe] 6s1 4f14 5d10. Electrons will connect to other (red springs) open slots (negative balance) electrons, but also repel each other (translucent spheres).
What is XE 6s2 4f14 5d10 6p2?
The element lead has the electron configuration [Xe] 4f14 5d10 6s2 6p2. This formula says that lead has all the electrons of xenon as well as the electrons listed after [Xe]. The 6s and 6p electrons are in the outermost shell, and are therefore the valence electrons.
Is Xe valid electron configuration?
[Xe] Element can’t be its own electron configuration.
What does Xe mean in electron configuration?
| Xenon | |
|---|---|
| Group | group 18 (noble gases) |
| Period | period 5 |
| Block | p-block |
| Electron configuration | [Kr] 4d10 5s2 5p6 |
Does 4d or 5s come first?
The same turns out to be true of the 5s orbitals as well. Even though 5s orbitals have a higher principal quantum number than 4d orbitals, (n = 5 compared to n = 4), they’re actually lower in energy. As a result, 5s orbitals are always filled before 4d orbitals. 5s, 5p, and 6s orbitals are all lower than 4f orbitals.