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Jul 20, 2023 · Under the new AL system, if your child is taking foundation subjects, your child will be graded AL A to AL C. Like standard subject ALs, the Foundation subject ALs will reflect a student's level of achievement, rather than how they have performed relative to their peers.
May 2, 2021 · Under the AL system, students gain entry to schools based on a maximum of 29 possible scores (from the best possible score of 4 to the worst of 32), compared to more than 200 possible aggregates under the old system.
In this video we will write the electron configuration for Al 3+, the Aluminum ion. We’ll also look at why Aluminum forms a 3+ ion and how the electron confi...
- 3 min
- 118.5K
- Wayne Breslyn
Aluminum ion reacts with aqueous ammonia to produce a white gelatinous precipitate of Al(OH)3: \[\ce{Al^{3+}(aq) + 3NH3(aq) + 3H2O(aq) <=> Al(OH)3(s) + 3NH4+(aq)} \nonumber \]
Oct 14, 2021 · Aluminum Cation | Al+3 | CID 104727 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
In this video we’ll use the Periodic table and a few simple rules to find the number of protons and electrons for the Aluminum ion (Al 3+). From the Periodic...
- 2 min
- 33.1K
- Wayne Breslyn
The charge of an aluminum ion is typically 3+. This is because the element’s atomic number is 13, reflecting the fact that it has 13 electrons and 13 protons. The valence shell of aluminum has three electrons, and per the octet rule, these three electrons are lost resulting in just 10 electrons and 13 protons.
