1s2, 2s2 2p6, 3s2 3p6
The sulfur ion has 16 electrons but sulfide has a charge of negative 2, increasing its electron count by two for a total of 18 electrons, giving it the same electron configuration as Argon (this means it is also isoelectronic with Argon)
In lead (II) sulfide (PbS), each lead ion is surrounded by six sulfide ions in a octahedral arrangement.
Na+ and neon are isoelectronic.
An ion of bromine has the electron shell arrangement of 2, 8, 18, 7. Therefore, an atom that has the same electron shell arrangement would be one that has 35 electrons, such as the element bromine itself before it becomes an ion with a charge of -1.
A chlorine ion with a stable arrangement of eight valence electrons is called a chloride ion (Cl-). It achieves this stable arrangement by gaining one electron from another atom to fill its outermost electron shell.
In the compound MgS, the sulfide ion has gained two electrons to achieve a stable electron configuration. This creates a negatively charged ion (S2-), which balances the positive charge of the magnesium ion (Mg2+).
In lead (II) sulfide (PbS), each lead ion is surrounded by six sulfide ions in a octahedral arrangement.
it is 2,8,8
2.8 There's a slight confusion if it is 2.8.3. well you see that is the electron arrangement of aluminium ATOM not ion. Hope this helps!
The nuclear charge is the same for both species, but the eight valence electrons in the sulfide ion experience a greater amount of electron-electron repulsion than do the six valence electrons in the neutral sulfur atom. This extra repulsion in the sulfide ion increases the average distance between the valence electrons, so the electron cloud around the sulfide ion has the greater radius.
Na+ and neon are isoelectronic.
Sulfur atoms will gain two electrons in order to achieve a noble gas electron configuration. A sulfide ion has the formula S2-.
16 protons and 18 electrons
1s22s22p6
A sulfide ion has 16 protons and 18 electrons. The additional electron gives the ion a negative charge, making the number of electrons greater than the number of protons.
An ion of bromine has the electron shell arrangement of 2, 8, 18, 7. Therefore, an atom that has the same electron shell arrangement would be one that has 35 electrons, such as the element bromine itself before it becomes an ion with a charge of -1.
Argon
A chlorine ion with a stable arrangement of eight valence electrons is called a chloride ion (Cl-). It achieves this stable arrangement by gaining one electron from another atom to fill its outermost electron shell.