Multiple Choice
Which of the following statements about the d-block elements in the periodic table is false?
2. Atoms & Elements
Isotopes
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How many more neutrons are present in an isotope of carbon-14 compared to a standard carbon-12 atom?
A
2
B
6
C
8
D
4
Verified step by step guidance1
Identify the number of protons in a carbon atom. Carbon has an atomic number of 6, which means it has 6 protons.
Determine the number of neutrons in carbon-12. Since the mass number of carbon-12 is 12, and it has 6 protons, the number of neutrons is calculated as: \( \text{Neutrons in } ^{12}\text{C} = 12 - 6 = 6 \).
Determine the number of neutrons in carbon-14. The mass number of carbon-14 is 14, and it also has 6 protons, so the number of neutrons is: \( \text{Neutrons in } ^{14}\text{C} = 14 - 6 = 8 \).
Calculate the difference in the number of neutrons between carbon-14 and carbon-12. Subtract the number of neutrons in carbon-12 from the number of neutrons in carbon-14: \( 8 - 6 \).
Conclude that carbon-14 has 2 more neutrons than carbon-12.
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