Zero. It has 4 electrons and thus it's electron configuration is 1s2 2s2. Each s orbital can only hold 2 electrons and since each has 2, there are are no unpaired electrons.
Oxygen is paramagnetic due to the presence of two unpaired electrons in its molecular orbital configuration. In molecular orbital theory, oxygen molecule (O2) consists of two oxygen atoms, each contributing one unpaired electron to form pi* anti-bonding molecular orbitals. These unpaired electrons make oxygen molecule paramagnetic, which means it is attracted to a magnetic field.
Cesium (Cs) has one unpaired electron in its outermost shell. It has the electron configuration of [Xe] 6s¹, meaning it has a single electron in the 6s orbital, which is not paired with any other electron. Therefore, cesium has one unpaired electron.
You can determine if an atom has paired or unpaired electrons by following Hund's rule, which states that electrons fill orbitals of a subshell singly with parallel spins before pairing up. Using the electron configuration of the atom, you can identify the number of electrons in each orbital and determine if they are paired or unpaired. Alternatively, you can use electron spin resonance spectroscopy to directly observe unpaired electrons in an atom.
The number of unpaired electrons in a transition metal ion is directly related to its hardness. Transition metals with more unpaired electrons tend to be harder because the unpaired electrons can participate in bonding interactions, making the metal more resistant to deformation. This is known as the relationship between hardness and the d-orbital occupancy of transition metals.
Helium has 0 unpaired electrons as it has a fully filled 1s orbital with 2 electrons.
There are 6 unpaired electrons in Cr because it is an exception atom when doing electron configuration. Because of the extra stability with a full subshell, one of the two electrons in the 4s orbital will move up to the 3d orbital (which originally had only 4 unpaired) to make the 3d orbital full. Now, there is one unpaired electron in the 4s orbital and 5 unpaired electrons in the 3d orbital, which adds up to 6 total.
Fluorine in its elemental stage has 1 unpaired electron. ( 2p5 orbital has one unpaired electron in 2p orbital)
3 electrons. This can be told from the periodic table. These electrons are in the 2p orbital.
Two degenerate orbitals are needed to accommodate the five electrons with three unpaired. The first orbital can hold two electrons with opposite spins, while the second orbital can hold up to three electrons with one paired and two unpaired.
An atom of yttrium (Y) has an electron configuration of 1s2,2s2,2p6,3s2,3p6,4s2,3d1, so it has one unpaired electron in the 'd' orbital.
Answer 1) O2 molecule has two unpaired electrons which is only proved by Molecular orbitals theory (M.O.T). the M.O.T may be checked in any standard book of Inorganic chemistry.Answer 2) If you examine the orbital diagram for dioxygen, it contains a SOMO (Singly-Occupied Molecular Orbital) with 2 unpaired electrons. Dinitrogen does not have this. These unpaired electrons contribute to magnetism.
Oxygen has two unpaired electrons in its molecular orbital configuration, making it paramagnetic. On the other hand, sulfur does not have any unpaired electrons in its molecular orbital configuration, making it diamagnetic. The presence of unpaired electrons in oxygen makes it more attracted to a magnetic field compared to sulfur.
There are no unpaired electrons in calcium, all 20 electrons are in pairs, i.e. each pair is configured in one orbital: 2x in 1s orbital 2x in 2s orbital 2x in each of the three 2p orbitals 2x in 3s orbital 2x in each of the three 3p orbitals and 2x in 4s orbital (these two are the valence electrons)
Silicon has 0 unpaired electrons. It is a nonmetal with an electron configuration of [Ne]3s^23p^2, meaning it has 4 valence electrons that pair up in its orbital arrangement.
There are three unpaired electrons in an atom of cobalt in its ground state. This can be determined by the electron configuration of cobalt, which is [Ar] 4s2 3d7. The 3d orbital has 5 electrons, so there are 3 unpaired electrons.
There is merely one unpaired electron in Potassium. The electron configuration of potassium is [Ar]4s^1. This means that potassium has all the electrons of argon, plus one more in the 4s orbital. All the electrons of argon are paired, so the one electron in the 4s orbital is the only unpaired electron.