No, aluminum does not become a negative ion; like all metals, it forms a positive ion.
chlorine
Chlorine becomes a negative ion in the process of bonding; ionization and bonding are simultaneous, so no, it does not happen before bonding.
No
No, nitrogen does not become a negative ion before bonding. Nitrogen typically forms covalent bonds, in which it shares electrons with other atoms.
yes
no, because carbon can neither donate or accept electrons , since it has 4 electrons in its outermost shellif it donates the remaining electrons fall into the nucleus as the number of protons is 4 more.And if it accepts nucleus cannot bare 4 more electrons. so it just forms co-valent bond with other atoms which doesnot need to become an ion before bonding.
The electronegativity difference between Al and Cl is 1.55. This is borderline covalent/ionic. Aluminium trichloride solid has six coordinate aluminum atoms. As you heat it just before the melting point the conductivity rises then falls as the solid melts. In the molten state aluminum trichloride is dimeric, Al2Cl6, with four coordinate aluminium atoms. The explanation is that the solid is more "ionic" and ions become mobile just before the melting point. At the melting point the neutral dimer is produced and the conductivity falls to zero. The bonding mode probably does not change in all of this
There are some unstable compounds which are formed as transitional compounds of multistep mechanisms, and they are known as carbocations.
Yes. This is known as chalking. Power wash to remove. If not removed will cause issues with the paint bonding to the siding over time.
Gaining an electron that has a negative charge would negatively charge the atom.
All the elements in periodic columns 1 and 2. Most of the other metals can also form positive ions before bonding, but do not always do so; sometimes they join with non-metals from periodic columns 15 and 16 to form anions instead, and sometimes they form covalent bonds.
no