How many neutrons does an atom have if its atomic number is 12 and its mass is 25? There are 13 neutrons, because the atomic mass equals the…
What element has an atomic number of 12 and a mass number of 25?
The element with the atomic number 12 is magnesium. This is 25Mg , or magnesium-25, which can be abbreviated as Mg-25.
How many neutrons would an atom with an atomic number of 12 and a mass number of 25 have?
How many neutrons does an atom have if its atomic number is 12 and its mass is 25? There are 13 neutrons, because the atomic mass equals the…
How many neutrons are there in the nucleus of an atom with atomic number 25?
There are 30 neutrons in the nucleus of an atom with an atomic number of 25.
How many protons and neutrons are there in the nucleus of an atom that has an atomic number of 12 and a mass number of 25?
A neutral atom of Carbon-12 contains six protons, six neutrons, and six electrons; therefore, it has a mass number of 12 (six protons plus six neutrons). Neutral carbon-14 contains six protons, eight neutrons, and six electrons; its mass number is 14 (six protons plus eight neutrons).
What is the atomic number of an element with 12 protons 10 neutrons and 12 electrons?
This is a magnesium Ion. There are 12 protons from the magnesium atom. There are 10 electrons because 12-2 = 10.
What is the mass number of an atom with an atomic number of 12 and 13 neutrons?
From the example, you can see that this magnesium atom would have 12 protons, 13 neutrons, and 10 electrons. Its mass is 25 (12 p + 13 n) and its charge is +2 (12 p – 10 e).
Which has a greater atomic number carbon-12 or carbon 14?
The number given after the atom name indicates the number of protons plus neutrons in an atom or ion. Atoms of both isotopes of carbon contain 6 protons. Atoms of carbon-12 have 6 neutrons, while atoms of carbon-14 contain 8 neutrons. … Carbon-12 is lighter than carbon-14.
How do u calculate atomic mass?
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
What is the atomic number of an atom with 3 protons 4 neutrons and 3 electrons?
Name | Lithium |
---|---|
Symbol | Li |
Atomic Number | 3 |
Protons | 3 |
Neutrons | 4 |
How many neutrons are in the nucleus of an atom with atomic number 15?
So, this element has 15 protons (atomic number), 15 electrons, and 16 neutrons (mass number minus atomic number). This isotope is phosphorus-31, which has atomic number 15.
How many neutrons are in the nucleus of an atom with an atomic?
To calculate the number of neutrons in the nucleus of an atom is simple. You take the atomic, or proton number of the element, and you subtract it from the element’s mass number. For example, take the isotope of copper, Cu-63.
How many neutrons are in an atom with the atomic number 16?
Name | Boron |
---|---|
Neutrons | 6 |
Electrons | 5 |
Atomic Number (Z) | 5 |
11 |
What is the atomic mass of an atom that contains 12 protons 12 electrons and 12 neutrons?
Magnesium, in its elemental form, has 12 protons and 12 electrons. The neutrons are a different matter. Magesium’s average atomic mass is 24.305 atomic mass units, but no magnesium atom has exactly this mass.
What is the atomic number of carbon 12?
General | |
---|---|
Protons | 6 |
Neutrons | 6 |
Nuclide data | |
Natural abundance | 98.93% |
How many protons and neutrons are there in the nucleus of an atom that has an atomic number of 13 and a mass number of 25?
Explanation: The mass number is the total number of protons and neutrons in a nucleus. The atomic number is the number of protons in the nucleus. →27−13=14 neutrons!
What is the relationship between 12 protons 12 neutrons and 12 electrons and one with 12 protons 13 neutrons and 12 electrons?
find the relationship between one atom containing 12 protons, 12 electrons and 12 neutrons and another atom containing 12 p, 12 e and 13 n. The two atoms are isotopes of a single element which is magnesium because they are having same atomic number but different mass numbers.
What is the atomic number of an element with 12 protons 10 neutrons and 12 electrons quizlet?
Magnesium has an atomic number 12, mass number 24, 12 protons, 12 neutrons, 10 electrons, and charge of +2. Is the element an ion or neutral? Chlorine has an atomic number of 17, mass number 35, 17 protons, 18 neutrons ,17 electrons, and 0 charge.
What is the element of an atom with 12 electrons and 10 protons?
On the Periodic Table this is Neon.
What is the mass number and atomic number of carbon 12?
Carbon-12: with 6 protons and 6 neutrons and an atomic mass of 12. Carbon-14: with 6 protons and 8 neutrons, and an atomic mass of 14.
What does carbon 12 indicate?
Definition of carbon 12
: an isotope of carbon of mass number 12 that is the most abundant carbon isotope and is used as a standard for measurements of atomic weight.
What are the mass number and atomic number of carbon 12 and carbon-13 respectively?
a. The mass number and atomic number of carbon-13 is 13 and 6, while that of carbon-12 is 12 and 6, respectively.
How are carbon-12 carbon-13 and carbon-14 alike?
The most common of these is carbon 12, 13, 14. All of these isotopes have the same atomic number but different mass numbers. … Carbon-12 has 6 neutrons, carbon-13 has 7 neutrons, and carbon-14 contains 8 neutrons. Carbon-12 and 13 are stable isotopes, which means that the nucleus does not undergo radioactive decay.
What do carbon-12 and carbon-14 have different?
Carbon-14 has six protons and eight neutrons in its nucleus. By contrast, most of the carbon in our bodies and in the outside world, known as carbon-12, has six protons and six neutrons.
Why are carbon-14 and carbon-12 considered to be isotopes?
Isotopes are forms of the same element with equal numbers of protons but different numbers of neutrons. For example, both carbon-12 and carbon-14 have 6 protons. But carbon-12 has 6 neutrons while carbon-14 has 8 neutrons. By definition, carbon-12, carbon-13 and carbon-14 are all isotopes of the carbon.
Which element has an atomic mass of 12?
Atomic Number | Symbol | Name |
---|---|---|
12 | Mg | Magnesium |
13 | Al | Aluminum |
14 | Si | Silicon |
15 | P | Phosphorus |
How do you calculate an atom?
To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro’s number: 6.02 x 10^23.
How do you write the atomic number and mass number?
To write the notation of an atom, we need to know the symbol of the element, the atomic number and the mass number. The mass number of the atom goes above the symbol and the atomic number is written as a subscript.
What atom has 11 protons 11 electrons and 12 neutrons?
Let’s look at a sodium atom. It has 11 protons and 12 neutrons in its nucleus, and 11 electrons outside the nucleus. Sodium is one of several atoms that easily donates an electron.
What atom contains 4 protons 4 neutrons and 3 electrons?
Name | Protons | Electrons |
---|---|---|
Helium | 2 | 2 |
Lithium | 3 | 3 |
Beryllium | 4 | 4 |
Boron | 5 | 5 |
What is the mass number of the atom that has 11 protons 11 electrons and 12 neutrons?
Sodium has a mass number of 23amu. Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons.
How many electrons are in the nucleus of an atom with an atomic number of 12?
Explanation: Usually, we are going to talk about neutral atoms, so the number of electrons and protons will be the same. In this case, a neutral atom with 12 protons will have 12 electrons.
How many protons are in the nucleus of atom with an atomic number 15?
In the given case, the atomic number of the given atom is 15, hence its nucleus contains 15 protons. The number of protons and electrons are the same in atom and that is what keeps it neutral. In the second case, the atomic number is 20. Hence, the atom will contain a total of 20 protons in its nucleus.
What has 15 protons and 16 neutrons?
Explanation: if you look at the periodic table, phosphorus has 15 electrons and protons, and 16 neutrons.
What is atom Class 11?
Atom is the smallest particle of matter that can take part in a chemical reaction. Atom is made of electron, proton and neutrons. Atom is not capable of independent existence. Two or more atoms combine together to form molecules.
What does the number 84 in the name krypton 84 represent *?
In the case of Krypton-84, this means that you have 84 nucleons, where 36 of these are protons, and the remaining 48 are neutrons. This becomes relevant in nuclear chemistry, where sometimes, you have to balance nuclear equations with respect to the mass numbers (nucleon numbers).
How do you calculate number of neutrons?
The number of neutrons in an atom can be calculated by subtracting the atomic number from the atomic mass. Both of these numbers can be found on the periodic table.
Which element has 16 neutrons?
PHOSPHORUS – I am a member of the nitrogen family with 16 neutrons.
Which atom is composed of 16 protons 16 electrons and 16 neutrons?
(b) By referring to a periodic table or a table of elements, we see that sulfur (S) has an atomic number of 16. Thus, each atom or ion of sulfur must contain 16 protons. We are told that the ion also has 16 neutrons, meaning the mass number of the ion is 16 + 16 = 32.
What has 16 protons and 18 neutrons?
The atomic number of sulfur is 16. The ion has 18 electrons that mean sulfur carries the charge of -2.
What is the element with 12 protons?
On the periodic table of elements, magnesium is represented by the symbol Mg. It has an atomic number of 12 because it has 12 protons in its nucleus.
What is the atomic number of an atom with 12 protons and 13 neutrons?
From the example, you can see that this magnesium atom would have 12 protons, 13 neutrons, and 10 electrons. Its mass is 25 (12 p + 13 n) and its charge is +2 (12 p – 10 e).
What is the atomic number for an element with 12 protons?
Atomic Number | Symbol | Name |
---|---|---|
11 | Na | Sodium |
12 | Mg | Magnesium |
13 | Al | Aluminum |
14 | Si | Silicon |