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What does atomic numbers indicate?
It indicates the protons. Periodic table is based on atomic number.
An atom of Potassium has a mass number of 40 and an atomic number of 19.how many protons does it have?
The atomic number is the number of protons: 19.number of neutrons = mass number - atomic number = 21.The number of electrons is normally the same as the number of protons: 19
How many protons are represented in an atom which has an atomic number of 9 and an atomis mass of 19?
An atom with an atomic number of 9 means it has 9 protons. The atomic mass of 19 indicates the total number of protons and neutrons in the nucleus, so if the atom has 9 protons, the remaining mass comes from neutrons (19-9=10 neutrons).
How many protons does an atom with the atomic number 50 and mass number of 125 contain?
An atom with atomic number 50 contains 50 protons. The mass number of 125 indicates the total number of protons and neutrons combined, so subtracting the number of protons (50) from the mass number gives 75 neutrons.
How many protons does an atom have if its atomic number is 4?
The atomic number IS the number of protons in the atom's nucleus.
How many protons are present in an atom of Be 9?
There are 4 protons in 9Be. All isotopes and ions of the same elements will have the same number of protons regardless of the difference in the number of neutrons or electrons. So the information about which isotope is (by saying Be-9) is unneeded.
The atomic number of oxygen 8 indicates that there are eight?
The atomic number organizes the elements and also tells you how many protons there are in an element. So, oxygen would have 8 protons.The atomic number of oxygen 8 indicates that there are eight protons.
How many electrons has an atom?
An atom has the same number of electrons as it does protons, and the number of protons determines what element it is.
How many protons are in the nucleus of an atom?
The number of protons in the nucleus of an atom is equal to the atomic number of the element.
What two pieces of information does the atomic number give?
The atomic number gives you the number of electrons and protons there are in an atom. ex: Carbon (C) has atomic number 6. So we know that it has 6 protons and 6 electrons
How many electrons in atom with atomic number of 9 and atomic mass of 19 and is electrically neutral?
Since the atom is electrically neutral, the number of electrons must be the same as the number of protons in the atom, which is the definition of atomic number. Therefore, there are 9 electrons.
How many protons are in a carbom atom?
An atom's atomic number gives us its number of protons. Carbon's atomic number is 6. Thus, it has 6 protons.
