Practice Question
Which of the following number of electrons are found in a boron atom with an atomic number of 5 and a mass number of 11?
Answer Choices:
Correct Answer:
5
Rationale:
💎 The atomic number represents the number of protons, which also equals the number of electrons in a neutral atom.
💎 A boron atom has an atomic number of 5, so it has 5 protons and 5 electrons.
💎 The mass number (11) equals protons plus neutrons, not electrons.
💎 The number of electrons only equals the atomic number when the atom is neutral.
💎 Therefore, a neutral boron atom has 5 electrons.
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This question is from ATI TEAS 7 Science~2025 Exam 5 which contains 49 questions.
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Answer Choices:
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Answer Choices:
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Question Details
- Category: ATI TEAS
- Subcategory: Comprehensive Teas 7 Exam(s)
- Domain: Comprehensive Teas 7~2025
- Answer Choices: 4