C) The atom must contain some centrally located positive charge. He called this core of positive charge the nucleus.
Explanation:
Rutherford concluded from his experiment that the atom contains some centrally located positive charge. He called the core the nucleus.
Rutherford developed the nuclear model of the atom.
- In a bid to explain his observation, Rutherford suggested the nuclear model.
- The model consists of small positively charged center called the nucleus.
- Nearly all the mass is concentrated in the nucleus.
- The extranuclear space is made up of electrons orbiting the nucleus.
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Answer:
c) Hexagonal close packed
Explanation:
The fact that a material is crystalline, amorphous or semicrystalline defines some of its properties. For example, if a material had the option of being crystalline or amorphous, it would be observed that in the crystalline state the density of the material would be greater in the amorphous state. This is because because of the order that the atoms follow in the crystalline material, it is possible to place more atoms in the same physical volume. When there are more atoms there is more mass in the same volume so the density is higher than when the material is amorphous.
The different crystalline structures are the following:
Simple cubic structures: the unit cell is a common edge cube, with a defined network point in each of its vertices.
Cubic structure centered on the body: the unit cell is a cube with a common edge. It has a defined network point in each of its vertices and a defined network point in the geometric center of the cube. INCLUDES a)
Cubic structure centered on the face: the unit cell is a cube with a common edge. It has a defined network point in each of its vertices and a defined network point in the geometric center of each of its faces. INCLUDES b) and d)
Answer:
carbon reduction we can extract a base metal from its ore via reduction of fused metal oxide using carbon whereas, in thermite process, we use aluminium powder instead of carbon.
Nerve impulses thats were there from
