Question
Which picture correctly models an atom from a lithium isotope?
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GPT-4o mini
To model an atom of a lithium isotope, you need to know the basic structure of a lithium atom and its isotopes.
Lithium (Li) has an atomic number of 3, meaning it has 3 protons in its nucleus. The number of neutrons can vary, resulting in different isotopes. The two most common isotopes of lithium are:
1. **Lithium-6 (Li-6)**, which has 3 neutrons (3 protons + 3 neutrons).
2. **Lithium-7 (Li-7)**, which has 4 neutrons (3 protons + 4 neutrons).
In both isotopes, lithium has 3 electrons orbiting around the nucleus.
A correct model of a lithium atom would include:
- A nucleus containing either 3 protons and 3 neutrons (for Li-6) or 3 protons and 4 neutrons (for Li-7).
- 3 electrons in energy levels surrounding the nucleus.
If you are looking at a visual representation, find a model that shows 3 positively charged protons and either 3 or 4 neutral neutrons in the center, with 3 negatively charged electrons in orbitals around the nucleus.
Lithium (Li) has an atomic number of 3, meaning it has 3 protons in its nucleus. The number of neutrons can vary, resulting in different isotopes. The two most common isotopes of lithium are:
1. **Lithium-6 (Li-6)**, which has 3 neutrons (3 protons + 3 neutrons).
2. **Lithium-7 (Li-7)**, which has 4 neutrons (3 protons + 4 neutrons).
In both isotopes, lithium has 3 electrons orbiting around the nucleus.
A correct model of a lithium atom would include:
- A nucleus containing either 3 protons and 3 neutrons (for Li-6) or 3 protons and 4 neutrons (for Li-7).
- 3 electrons in energy levels surrounding the nucleus.
If you are looking at a visual representation, find a model that shows 3 positively charged protons and either 3 or 4 neutral neutrons in the center, with 3 negatively charged electrons in orbitals around the nucleus.
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