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A sample of calcium contains calcium -40 calcium -44 calcium -42 calcium -48 calcium -43 and calcium -46 atoms Explain why these atoms can have different mass numbers bu the must have the same atomic?
The number of protons in an atom determines its atomic number, which is the same for all calcium atoms (20). The mass number of an atom is the sum of its protons and neutrons. The different mass numbers for these calcium atoms are due to variations in the number of neutrons, resulting in isotopes of calcium.
What is the relationship between two elements X and Y whose atomic numbers are 18 and 20 respectively but their mass numbers remain same as 40?
Elements X and Y with atomic numbers 18 and 20, respectively, are argon (Ar) and calcium (Ca). Despite having the same mass number of 40, they are different elements because they have different numbers of protons in their nuclei; argon has 18 protons, while calcium has 20. The fact that their mass numbers are the same suggests they can exist as isotopes or in a specific isotopic form under certain conditions, but in this case, they are simply different elements with different properties.
Why does bromine have different mass numbers?
Different isotopes of bromine have different numbers of neutrons, resulting in different mass numbers. Bromine-79 and bromine-81 are the two most common isotopes of bromine, with mass numbers of 79 and 81, respectively.
What same mass numbers do isotopes have?
Mass numbers of isotopes are different.
Do isotopes of an element have the same atomic mass but different atomic number?
The different mass numbers are due to different numbers of neutrons.
Does Ca and Ar have same mass numbers 40?
No, calcium (Ca) has a mass number of 40, while argon (Ar) has a mass number of 40 as well.
Why does Calcium have different mass numbers but same atomic number?
Atomic numbers are determined by the number of protons an atom has. The mass number is determined by the number of protons and neutrons. While the number of protons can't change (as the element itself would change), neutrons can and do vary. These are called isotopes.
How do the atomic mass numbers of different isotopes of an element compare?
The different isotopes have different atomic mass numbers, because the isotope has different numbers of neutrons. The protons and electrons are the same, so the change in mass number is the same as the change in the number of neutrons.
Do isotopes have the same atomic number and different mass numbers?
Yes. Isotopes have the same atomic number because all of their atoms have the same number of protons. They have different mass numbers because their atoms have different numbers of neutrons, and mass number is the sum of the numbers of protons and neutrons.
How can different atoms of the same element have the same atomic number but can have different mass numbers?
They have different numbers of neutrons.
What is calciums average atomic mass?
The average atomic mass of calcium is approximately 40.08 atomic mass units (amu). This value accounts for the relative abundance of its stable isotopes, primarily calcium-40, calcium-42, calcium-43, calcium-44, and calcium-46. Because isotopes have slightly different masses, the average reflects the weighted contributions of each isotope based on their natural abundance.
What is calcium rounded mass number?
Calcium is a metal element. Atomic mass of it is 40.
