Question
Use the periodic table to answer the question.
The periodic table of elements shows element groups, periods, and element properties.
Which element has atoms with valence electrons in a higher energy level than those of calcium (Ca)?
(1 point)
Responses
cesium (Cs)
cesium (Cs)
oxygen (O)
oxygen (O)
lithium (Li)
lithium (Li)
bromine (Br)
bromine (Br)
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The periodic table of elements shows element groups, periods, and element properties.
Which element has atoms with valence electrons in a higher energy level than those of calcium (Ca)?
(1 point)
Responses
cesium (Cs)
cesium (Cs)
oxygen (O)
oxygen (O)
lithium (Li)
lithium (Li)
bromine (Br)
bromine (Br)
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Answers
GPT-4o mini
Valence electrons are the electrons in the outermost shell of an atom. Calcium (Ca) is in group 2 and period 4 of the periodic table, meaning it has valence electrons in the 4th energy level.
To find an element that has valence electrons in a higher energy level than calcium, we need to look for elements in periods 5 or higher.
Among the options provided:
- **Cesium (Cs)** is in period 6.
- **Oxygen (O)** is in period 2.
- **Lithium (Li)** is in period 2.
- **Bromine (Br)** is in period 4.
The only element with valence electrons in a higher energy level than calcium is **cesium (Cs)**.
So, the answer is **cesium (Cs)**.
To find an element that has valence electrons in a higher energy level than calcium, we need to look for elements in periods 5 or higher.
Among the options provided:
- **Cesium (Cs)** is in period 6.
- **Oxygen (O)** is in period 2.
- **Lithium (Li)** is in period 2.
- **Bromine (Br)** is in period 4.
The only element with valence electrons in a higher energy level than calcium is **cesium (Cs)**.
So, the answer is **cesium (Cs)**.