Podcast
Questions and Answers
What is the atomic mass of Lithium?
What is the atomic mass of Lithium?
- 7 (correct)
- 3
- 31
- 15
How many protons are present in Sodium?
How many protons are present in Sodium?
- 31
- 3
- 15 (correct)
- 4
If Sodium were to lose 2 electrons, what would its charge be?
If Sodium were to lose 2 electrons, what would its charge be?
- -1
- 0
- 2 (correct)
- -2
How many neutrons does Lithium have?
How many neutrons does Lithium have?
What is the total number of electrons in a neutral atom of Sodium?
What is the total number of electrons in a neutral atom of Sodium?
Flashcards
Atomic Number (Z)
Atomic Number (Z)
The number of protons in an atom's nucleus, determining its identity as a specific element.
Atomic Mass (A)
Atomic Mass (A)
The total number of protons and neutrons in an atom's nucleus, expressed as a decimal due to the presence of isotopes.
Electrons (E)
Electrons (E)
The number of negatively charged particles orbiting an atom's nucleus.
Neutrons (N)
Neutrons (N)
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Protons (P)
Protons (P)
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Study Notes
Element Lithium (Li)
- Atomic Number: 3
- Atomic Mass: 7
- Protons: 3
- Neutrons: 4
- Electrons: 3
Calculating Charge
- Positive charge is reduced by subtracting the number of electrons from the number of protons
- Negative charge is added by adding the number of electrons to the number of protons
General Notes
- The number of protons identifies an element
- Mass is determined by the sum of protons and neutrons
- Electrons determine the charge
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