Explanation:
The electronic structure of Al is a representation of the number of electrons it contains.
We use the number of electrons to write the electronic structure of an atom.
Al is a metal with 13 electrons;
Shell notation = 2 8 3
Sublevel notation = 1s² 2s² 2p⁶ 3s² 3p¹
Answer:
C: Plates float on the liquid mantle located below the crust.
Explanation:
Plates at our planet’s surface move because of the intense heat in the Earth’s core that causes molten rock in the mantle layer to move. It moves in a pattern called a convection cell that forms when warm material rises, cools, and eventually sink down. As the cooled material sinks down, it is warmed and rises again.
Scientists once thought that Earth’s plates just surfed on top of the mantle’s giant convection cells, but now scientists believe that plates help themselves move instead of just surfing along. Just like convection cells, plates have warmer, thinner parts that are more likely to rise, and colder, denser parts that are more likely to sink.
The answer is non-vascular. They are low to the ground because they do not have vascular systems to bring the nutrients throughout the plant. And they are too low to reproduce by wind so they need water.