The noble gases, because they already have a full valence shell
Answer:inner Diameter =9.19cm
Explanation:
Density is calculated as Mass/ Volume
therefore
Volume= Mass/ Density = 1360g/ 0.953g/ml=1,427 ml
1ml = 1cm³
1,427ml = 1,427cm³
Also We know that Volume of a cylinder = πr²h or πr²l
1,427cm³ = 3.142 x r² x 21.5 cm
r² = 1,427cm³/ (3.142 x 21.5cm)
r² =21.124cm²
= r²
r= 4.596cm
Diameter= 2 x radius
=2 x 4.596
=9.19cm
Answer:
A nitrogen atom must gain three electrons to have the same number of electrons as an atom of the following noble gas, neon. Thus, a nitrogen atom will form an anion with three more electrons than protons and a charge of 3−. The symbol for the ion is N3−, and it is called a nitride ion.
Answer:
See answer below
Explanation:
In this case, let's draw the butane molecule:
CH₃ - CH₂ - CH₂ - CH₃
According to what the exercise states, we removed an atom of hydrogen from the frist carbon. This could be any of the terminals. I'll grab the first from left to right.
CH₂⁺ - CH₂ - CH₂ - CH₃
When this happens, the atom of carbon is lacking one space and it forms a carbocation.
Followed this step, an hydroxile group replace the atom of hydrogen. The hydroxile is the OH, and when we have an alkane with an OH group in the molecule, we are actually converting this molecule into an alcohol, therefore the molecule formed is:
<h2>
OH - CH₂ - CH₂ - CH₂ - CH₃</h2><h2 />
Hope this helps
Answer:
a) Ionic bonding
Covalent bonding
Metallic bonding
b) Electrons with the same state must have opposite spins.
Electron state can hold no more than two electrons.
Explanation:
a) When an atom loses electrons it became a cation, with a positive charge, and when an atom gain electrons it became an anion, with a negative charge. Because of the attraction of the opposite charges, the ions form a bond, which is called ionic bonding.
When atoms share electrons to complete the octet rule, they form a molecule by covalent bonding.
When a metal loses its valence electrons, they form a "sea of electrons" and the cations are "glued" by them, which is called metallic bonding.
b) The Pauli exclusion principle determinants that two electrons can not occupy the same state at the same time, it means that two electrons can't have the same four quantic number equal. If they are at the same shell, they must have different spins. The electron can have only two spin (-1/2 or +1/2) so the electron state can hold no more than two electrons, and they have to have opposite spins.
