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Hydrogen-1, the most abundant isotope of hydrogen, has a mass number of 1. It has one proton and no neutrons.

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Q: The element has a mass number and atomic number of 1?
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What is the difference between the atomic number and the atomic mass?

Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has


Is there an element that has the same atomic number and atomic mass?

No, there is no naturally occurring element with the same atomic number and atomic mass. The atomic mass of an element is the weighted average of the masses of its isotopes, which have different numbers of neutrons. The atomic number of an element is the number of protons in its nucleus, which determines its identity. Therefore, the atomic number and atomic mass are different for each element.


What is the atomic number and atomic mass of alcohol?

Alcohol does not have an atomic number because it is not an element. Its molar mass is 46.07 g mol−1.


The number shown on the top part of each of the element squares in a periodic table is the?

This depends on the periodic table but it is either the atomic number (the number of protons) or the atomic mass (the number of protons and neutrons). The integer number will be the atomic number and the larger number will be the atomic mass. The exception is hydrogen which has an atomic number of 1 and an atomic mass of 1 (very close to it).


Definition of atomic mass and atomic number?

the atomic number: The number of protons in the nucleus of an atom determines an element's atomic number. In other words, each element has a unique number that identifies how many protons are in one atom of that element. For example, all hydrogen atoms, and only hydrogen atoms, contain one proton and have an atomic number of 1. All carbon atoms, and only carbon atoms, contain six protons and have an atomic number of 6. Oxygen atoms contain 8 protons and have an atomic number of 8. The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. the atomic mass: it's the sum of neutrons and protons electrons in a single atom. to sum it up the atomic number is the number of protons and the mass number is the total number of every thing in an atom!

Related questions

What is the difference between the atomic number and the atomic mass?

Atomic mass is the mass of 1 mole of the element. Atomic number is the number of protons the element has


Is there an element that has the same atomic number and atomic mass?

No, there is no naturally occurring element with the same atomic number and atomic mass. The atomic mass of an element is the weighted average of the masses of its isotopes, which have different numbers of neutrons. The atomic number of an element is the number of protons in its nucleus, which determines its identity. Therefore, the atomic number and atomic mass are different for each element.


What is the difference between the atomic number and the atomic weight of the known elements as listed on the periodic table?

The atomic number of the element is the number of protons or number of electrons in an atom of the element . The atomic weight of the element is the ratio of the mass of the atom to the 1/12th of the mass of the atom of carbon 12.


What is the atomic number and atomic mass of alcohol?

Alcohol does not have an atomic number because it is not an element. Its molar mass is 46.07 g mol−1.


What is the atomic number and mass number of hydrogen?

Hydrogen is a non metal element. Atomic number of it is 1.


What are the atomic number and mass number for hydrogen?

Hydrogen is a non metal element. Mass number of it is 1.


What is the mass and atomic number of hydrogen-3?

Hydrogen is a non metal element. Atomic number of it is 1.


The number shown on the top part of each of the element squares in a periodic table is the?

This depends on the periodic table but it is either the atomic number (the number of protons) or the atomic mass (the number of protons and neutrons). The integer number will be the atomic number and the larger number will be the atomic mass. The exception is hydrogen which has an atomic number of 1 and an atomic mass of 1 (very close to it).


What you hydrogens mass number?

Hydrogen is a non metal element. Atomic mass of it is 1.


Which element's atomic number is the same as it's atomic weight?

Hydrogen, because it has one proton and no neutrons, thus has an atomic mass of 1, and is element 1.


Is the atomic mass equal to the molar mass?

1. The molecular mass of a compound is the sum oh the atomic weights of the elements contained in the molecule of this compound. 2. The atomic number of an element is the number of this element in the Periodic Table of Mendeleev; the atomic number is equal to number of protons and electrons.


What is the mass number for Ag plus 1?

Silver is a metal element. Atomic mass number of it is 197.