Describe the arrangement of subatomic particles in our current model of the atom. (2 marks) square

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Describe the arrangement of subatomic particles in our current model of the atom. (2 marks) square

Answer 1

In our current model of the atom, the protons and neutrons are located in the dense nucleus at the center of the atom, while the electrons move around the nucleus in a cloud-like region, occupying different energy levels.

Answer 2

## Step 1: The current model of an atom, often referred to as the quantum mechanical model, is based on the principles of quantum mechanics. This model describes the atom as a tiny, dense, positively charged core called a nucleus surrounded by a cloud-like region of moving electrons. ## Step 2: In the nucleus of the atom, we have the protons and neutrons. Protons carry a positive charge, whereas neutrons are neutral, carrying no charge. The nucleus is extremely dense and accounts for almost all the mass of the atom. ## Step 3: Surrounding the nucleus, we have the electrons. Electrons are negatively charged particles that move around the nucleus in a cloud-like region. The exact position of an electron at any given time cannot be precisely determined, which is a fundamental principle of quantum mechanics. The electrons occupy different energy levels, also known as shells or orbitals, around the nucleus.

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Describe the arrangement of subatomic particles in our current model of the atom. (2 marks) square

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