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On the Periodic Table, lead (Pb) has an atomic weight of 207.2, and cobalt (Co) has an atomic weight of 58.93320.
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How many protons electrons neutrons does Cobalt 60 have?
Cobalt-60 has 27 protons, (Cobalt has an atomic number of 27) 33 neutrons (mass number less atomic number) 27 electrons in the neutral atom (balancing the charge of the 27 protons)
Why is cobalt placed before nickel on the periodic table of the elements?
Cobalt comes first because it has fewer protons (27) and nickel has more (28). The atomic mass is not important in the modern periodic table (but that's all they knew in Mendeleev's day). The reason cobalt is heavier is because it has more NEUTRONS (32).
How many neutrons does a cobalt-60 atom have?
Since cobalt has an atomic number of 27, any isotope of it contains 27 protons and 27 electrons per atom. The isotope with mass number 60 contains (60 - 27) or 33 neutrons per atom.
An Ion with a mass of 209 and atomic number of 84 and net charge of 4 plus?
The ion is a lead ion with a 4+ charge. Its atomic number is 84, and its mass number is 208 (since the mass number is one less than the atomic mass for this particular ion).
What is the atomic number and atomic mass of this element?
Atomic number is the number of protons. Atomic mass is (mostly) the sum of the masses of the protons and neutrons (more or less).
What is cobalts atomic number?
A typical atom of cobalt contains 32 neutrons. Cobalt's atomic number is 27, so that's 27 protons. Its average atomic mass is about 59, so 59-27=32. Note: different isotopes of cobalt will have either more or less neutrons than 32, but most likely, cobalt's most abundant isotope has 32. The atomic mass value on the periodic table, which is 58.933, is a weighted average of all cobalt's isotopes.
How many protons electrons neutrons does Cobalt 60 have?
Cobalt-60 has 27 protons, (Cobalt has an atomic number of 27) 33 neutrons (mass number less atomic number) 27 electrons in the neutral atom (balancing the charge of the 27 protons)
Why is co placed before ni on the periodic table?
Keep in mind that the atomic mass of an element is based on an average of relative abundance of stable isotopes. Nickel has several stable isotopes and Cobalt I believe has only one stable isotope. The weighted average proportionally to the relative abundance of the several Nickel isotopes is less than the average of Cobalt's isotope(s). So basically Though Nickel has a greater atomic number and the trend is for this to correlate with atomic mass because nickel exists in relatively large proportion as a lighter stable isotope Nickels average atomic mass is less than Cobalt's atomic mass. Google about relative abundance and calculating atomic mass to find all sorts of interesting things!
Why is cobalt placed before nickel on the periodic table of the elements?
Cobalt comes first because it has fewer protons (27) and nickel has more (28). The atomic mass is not important in the modern periodic table (but that's all they knew in Mendeleev's day). The reason cobalt is heavier is because it has more NEUTRONS (32).
How many neutrons does a cobalt-60 atom have?
Since cobalt has an atomic number of 27, any isotope of it contains 27 protons and 27 electrons per atom. The isotope with mass number 60 contains (60 - 27) or 33 neutrons per atom.
An Ion with a mass of 209 and atomic number of 84 and net charge of 4 plus?
The ion is a lead ion with a 4+ charge. Its atomic number is 84, and its mass number is 208 (since the mass number is one less than the atomic mass for this particular ion).
What is the atomic number and atomic mass of this element?
Atomic number is the number of protons. Atomic mass is (mostly) the sum of the masses of the protons and neutrons (more or less).
Which element with 626 as atomic number?
None! The highest atomic number known is less than 130.
What is the new element formed after the alpha decay occurred?
AlphaThe atomic number goes down by two and the atomic mass number goes down by four.Beta-The atomic number goes up by one and the atomic mass number stays the same.Beta+The atomic number goes down by one and the atomic mass number stays the same.
What is one less proton than argon?
Chlorine, with the atomic number 17 has one less proton than argon, with the atomic number 18. The atomic number is the number of protons.
Which two elements have an atomic mass less than twice their atomic number?
Elemental hydrogen and helium have atomic masses less than twice their atomic numbers.
What is the lowest atomic number in the periodic table?
Atomic number: The number of protons in an atomic nucleus. (http://www.answers.com/topic/atomic-number) So the lowest atomic number is 1, which is hydrogen, as you cannot have an element with less than one proton.
