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What is the symbol of an isotope of cesium whose atoms have 82 neutrons?
You are looking for the symbol of cesium (Cs) and indication of its mass number. The mass number is the sum of the protons and neutrons. So if every atom of cesium has 55 protons, then the mass number of this isotope is 137. The mass number is indicated in superscript before the symbol: 137Cs
What element has an atomic number of 74?
The atomic number is the same as the number of protons. So, from an atomic number of 74, we can conclude that there are 74 protons. One proton cancels out the charge of one electron, therefore, equal numbers of protons and electrons results in a neutral particle. For an atom with 74 protons to be neutral, 74 electrons are needed to balance.
What element has only 12 protons?
Each atom of the element magnesium contains exactly 12 protons.
Which element has the mass number of 65 with 34 neutron and the charge is 3 plus?
Well, honey, the element you're looking for is Selenium. It has an atomic number of 34, which means it normally has 34 protons and 34 electrons, but with a charge of 3 plus, it means it lost 3 electrons, giving it a net charge of +3. So, there you have it, Selenium with a mass number of 65, neutron count of 31, and a sassy attitude to boot.
How are the eleven electrons of the sodium atom arranged?
The sodium atom has 11 electrons arranged in energy levels. The first energy level contains 2 electrons, while the second energy level contains 8 electrons. The remaining electron fills the third energy level.
Calculate the number of neutrons of the atom whose atomic number is 42 and whose mass number is 96?
To find the number of neutrons, subtract the atomic number (number of protons) from the mass number. For this atom with an atomic number of 42 and a mass number of 96, the number of neutrons would be 96 - 42 = 54 neutrons.
Is this statement correct atoms are made up of nucleus and electrons composed of protons whose number is called the atomic number and neutrons whose numbers added together make the mass number?
It's close, but an atom is made of a nucleus and electrons. The nucleus is made of protons and neutrons. The number of protons equals the atomic number of the element, and the atomic mass is the number of protons plus neutrons.
What is the number of electron whose mass number is 75 and whose number of neutrons is 42?
The mass number is the sum of protons and neutrons in an atom. If the mass number is 75 and the number of neutrons is 42, then the number of protons would be 75 - 42 = 33. Since atoms are electrically neutral, the number of electrons in the atom would also be 33.
How many protons neutrons and electrons in 58cr and 63cr?
Assuming that the questioner intended to write "Cr" instead of "cr", the isotopes indicated are those of the element chromium, whose atomic symbol is "Cr" and whose atomic number is 24. The atomic number is defined as the number of protons in a nucleus of each atom, and the atomic mass number, which precedes the atomic symbol, is defined as the number of protons and neutrons combined. In order to maintain electrical neutrality as is required for any atom, the number of electrons must be the same as the number of protons. From the definition of mass number, it follows that the number of neutrons is equal to the atomic mass number minus the atomic number. Therefore, each isotope named in the question has 24 protons and 24 electrons, but the isotope with mass number 58 has 32 neutrons and the isotope with mass number 63 has 32 neutrons has 39 neutrons.
Do atoms have neutrons in them?
Atoms of all elements can have neutrons in them. Only the element hydrogen has an isotope whose atoms do not contain neutrons, but all other isotopes of hydrogen have neutrons in them. In the heavier elements the number of neutrons always exceeds the number of protons in the atom.
The atomic mass of an element whose atoms consist of eight protons nine neutrons and eight electrons is what?
The atomic mass of the element with eight protons and nine neutrons is 17 atomic mass units. This is calculated by adding the number of protons and neutrons together, as electrons contribute negligible mass to the overall atomic mass.
What is an isotone?
An isotone is a group of atomic nuclei that have the same neutron number but different atomic numbers. This means isotones have the same number of neutrons but different numbers of protons. Isotones are different from isotopes, which have the same atomic number but different numbers of neutrons.
How do you work out how many electrons protons and neutrons an atom has?
if it is a discovered element, look up its atomic number. that is a count of the number of protons in an atom of that element. the number of protons can also be determined by the magnetic charge with no electrons.
What is the symbol of an isotope of cesium whose atoms have 82 neutrons?
You are looking for the symbol of cesium (Cs) and indication of its mass number. The mass number is the sum of the protons and neutrons. So if every atom of cesium has 55 protons, then the mass number of this isotope is 137. The mass number is indicated in superscript before the symbol: 137Cs
Which particles determine the mass of an atom?
The atomic mass unit is defined to be 1/12 of the mass of a carbon-12 atom. Atomic masses can determined by weighing molar amount of an isotope. Absolute masses (in kg) are determined by measuring the amount that charged atoms are deflected by magnets, since if you know the charge you can calculate mass from the amount of deflection.
What is The atomic mass of an element whose atoms consist of seven protons eight neutrons and seven electrons?
The atomic mass of an element is the sum of the number of protons and neutrons in the nucleus of an atom. In this case, the element has 7 protons and 8 neutrons, so the atomic mass would be 7 + 8 = 15 atomic mass units.
The atomic weight of an element whose atoms contain 8 protons 8 electrons and 8 neutrons is?
The atomic weight of an element is the weighted average of the masses of its isotopes. For an element with 8 protons and 8 neutrons (oxygen-16 isotope), the atomic weight would be close to 16 g/mol due to the equal number of protons and neutrons.
