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Consider the silicon 29 isotope How many protons and neutrons and electrons will it have?
All silicon atoms have 14 electrons and 14 protons. That is a rule that every silicon atom must follow. On the periodic table, the number next to the atom is the number of electrons/protons in an atom (silicon is the 14th element listed on the periodic table, hence the 14 electrons and 14 protons). The number "29" is the number of protons and neutrons together. This number can change with changing isotopes. So, if every silicon atom must have 14 protons, and 29 is the number of protons and neutrons together, so the number of neutrons must be 29 minus 14. Final: 14 protons 14 electrons 15 neutrons
What is the mass number of an ion with 107 electrons 159 neutrons and a plus 1 charge in integer form?
If the ion has a +1 charge and has 107 electrons, that means that it originally had 108 electrons, and therefore has 108 protons. The mass number is the sum of the protons and neutrons, 108 + 159, and therefore is equal to 267.
Calcium has an atomic mass of an atomic number of 20 so the number of neutrons must be?
The number of neutrons in an atom can be calculated by subtracting the atomic number (number of protons) from the atomic mass. For calcium with an atomic number of 20, if the atomic mass is 40, then the number of neutrons would be 40 - 20 = 20 neutrons.
How many protons neutrons and electrons are there in sulfur?
There are 16 protons, 16 neutrons and 16 electrons in a Sulfur atom. *note it's atomic number- this is the number of protons in an atom of an element. There must be the same number of electrons to balance the charge. The atomic weight minus the number of protons gives you the number of neutrons
What is the number of protons neutrons and electrons in an atom of zirconium 90 that has overall charge and an atomic number of 40?
Zirconium-90 (90Zr) has the atomic number 40, and it has 40 protons. The question asked about a specific isotope of zirconium, and the 90 in this isotope represents the number of protons plus the number of neutrons in 90Zr. The math is simple, and 90 minus 40 tells us there are 50 neutrons in this atom. As the atom was said to be electrically neutral, so that means the number of electrons will be equal to the number of protons. The atom will, therefore, have 40 electrons.
Why is the number of protons equal to the number of electrons in an atom?
To maintain the neutrality of an atom the number of neutrons must be equal to number of electrons; in ions this number is not equal.
Is the number of electrons in an atom must equal the number of neutrons?
No. For an atom to be neutral (no charge, not an ion) the number of electrons must equal the number of protons. Usually the number of electrons is very close to the number of protons though.
Do neutrons always equal the number of elecrons?
Electrons are equal to the number of protons and the atomic number. To find the number of neutrons you must subtract the atomic number from the mass number.
What number of protons and neutrons must be contained in the nucleus to result in a neutral atom?
For a neutral atom, the number of protons (which determines the element) must be equal to the number of electrons. This means that the number of protons should be equal to the number of electrons for the atom to be neutral. Neutrons have no charge, so the number of neutrons does not affect the overall charge of the atom.
If an element has 12 protons and 17 neutrons how many electrons must it have?
The number of electrons in a neutral atom is equal to the number of protons, so in this case, the element must have 12 electrons.
A neutral atom has the same number of protons as it does neutrons?
no. an atom is made up of protons neutrons and electrons. protons have a charge of plus one electrons have a charge of minus one neutrons have no charge. therefore the number of protons and electrons must be equal (balancing the charges) for the atom to be neutral. ;)
Why must the number of protons and neutrons be equal?
The number of protons and neutrons is not equal. The equality is not a rule.
How can the number of protons electrons and neutrons be calculated when giving the mass number?
The atomic number must be known along with the mass number. Then the number of protons or electrons is the same as the atomic number, and the number of neutrons is the difference between the mass number and the atomic number.
The atomic mass of an atom is 46 and it has 22 neutrons. How many electrons does it have?
46. That answer is incorrect. If the atom has 22 neutrons, then it must have 24 protons to make up the total mass of 46. A neutral atom always has the same number of electrons as protons so the correct answer is 24.
How many neutrons and electrons does an oxygen atom have?
Oxygen has 8 protons . The number of neutrons depends on the isotope. Oxygen-15 isotope has 7 neutrons and oxygen-16 isotope has 8 neutrons. (Note: Mass number = Number of protons + number of neutrons)
Can you find out the number of electrons by adding protons and neutrons?
To find out the number of electrons in an element you must add the protons and neutrons and subtract that number with the atomic mass, this will determine the amount of electrons because the unknown element could be an isotope and have more than the normal amount of electrons of the non isotope element.
A neutral atom with an atomic number 92 must have?
This atom is uranium; 92 protons, 92 electrons and a variable number of neutrons depending on the isotope.
