All atoms of a chemical element have the same atomic number (number of protons in the nucleus) but may have different mass numbers (from having different numbers of neutrons in the nucleus). Atoms of an element with the same mass number make up an isotope of the element.
Is it possible for an element to have different atomic numbers?
Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Atomic number is the number of protons in the nuclei of an element. Since two atoms of the same element should have the same proton number. So, their atomic numbers are also same. Hence, they cannot have the different atomic number.
Can atoms of the same element be different?
Atoms with the same number of protons but different numbers of neutrons are called isotopes. Because the number of neutrons can vary for a given element, the mass numbers of different atoms of an element may also vary.
Atoms of the same element have the same atomic number so the number of protons (and electrons) are same. But they have same or different mass numbers (like that for isotopes). Different mass number will have different number of neutrons. Was this answer helpful?
Which quantity can vary among atoms of the same element?
The number of protons determines an element’s atomic number and is used to distinguish one element from another. The number of neutrons is variable, resulting in isotopes, which are different forms of the same atom that vary only in the number of neutrons they possess.
Can atoms of different elements have the same atomic number Explain using relevant examples?
Explanation: Atoms from two different elements may have the same number of neutrons, but never the same number of protons. The number of protons is unique to the element and represents the atomic number.
When two atoms have the same atomic number they have the same number of neutrons?
Two atoms with the same atomic number, but different mass numbers (same number of protons, different number of neutrons), are called isotopes, or isotopic nuclides. Having different numbers of neutrons changes the mass of these atoms, so isotopes have slight variations in their physical and chemical behavior.
Why do all atoms have the same atomic number although they may have different mass numbers?
For isotopes (elements that have different masses, no charge), only the number of neutrons has been changed. Examples are Carbon-12, Carbon-13, and Carbon-14. Because none of these situations change the number of protons, the atomic number stays the same regardless.
Are atoms different?
But, all atoms are not the same. You know that the number of protons in an atom determines what element you have. For instance hydrogen has one proton, carbon has six. The difference in the number of protons and neutrons in atoms account for many of the different properties of elements.
What is the atomic number of an atom equal to?
atomic number, the number of a chemical element in the periodic system, whereby the elements are arranged in order of increasing number of protons in the nucleus. Accordingly, the number of protons, which is always equal to the number of electrons in the neutral atom, is also the atomic number.
What can be determined if only the atomic number of an atom is known?
What can be determined if only the atomic number of an atom is known? the total number of protons and the total number of electrons in the atom.
What is the difference between atomic mass and atomic number?
While the mass number is the sum of the protons and neutrons in an atom, the atomic number is only the number of protons. The atomic number is the value found associated with an element on the periodic table because it is the key to the element’s identity.
Can atoms of the same element have different numbers of electrons?
No. Two atoms of the same chemical element are typically not identical. First of all, there is a range of possible states that the electrons of an atom can occupy. Two atoms of the same element can be different if their electrons are in different states.
Which have the same atomic number but different atomic mass?
Those elements that have the same atomic number but a different mass number are referred to as isotopes. Isotopes occur due to the presence of a different number of neutrons in elements having the same atomic number as mass number is the sum of the number of neutrons and protons.
Which of the following is an atom of same element which have the same atomic number but has different mass number?
Atoms of the same element having the same atomic number but different mass are called isotopes. They have same number of protons and electrons but different number of neutrons. For example: Hydrogen ” protium (11H), deuterium (12H) and tritium (13H) are isotopes.
Do atoms of the same element have the same atomic mass?
Atoms of the same chemical element do not always have the same mass because, although the number of protons in the nucleus is the same for all atoms of the same element, the number of neutrons is not. Most elements as they occur naturally on earth are mixtures of several isotopes.
Why are atoms of different elements different?
What makes atoms of various elements different from each other is their number of protons. In other words, each element is composed of atoms that have a specific number of protons.
What makes atoms of different element different?
The number of protons in an atom is the defining feature of an atom. It’s what makes one element different from another. The number of protons in an atom is called its atomic number. Oxygen atoms have 8 protons.
Why do atoms of different elements differ from one another?
The number of electrons, protons and neutrons makes atoms of one element different from the other. The properties of an element are decided by the number of electrons. Different elements have different number of electrons so they differ from each other.
What happens to the mass number and atomic number of an element?
Mass number and atomic number remain unchanged. After gamma radiation the mass number and atomic number remains unchanged.
How is atomic number related to the identity of the atom?
1 Answer. The atomic number stands for the number of protons in an atom of the element. The number of protons determines the identity of the element, So the atomic number identifies the element.
What is the relationship between atomic number and atomic mass?
Atomic mass is associated with the number of neutrons and protons that are present in a particular nucleus of an element. Atomic number is usually the number of protons present in an element’s nucleus. It is the average weight of an element. It is the total number of protons in the atom’s nucleus.
What is the difference between atomic number and mass number Brainly?
Explanation: The major difference between atomic number and mass number is that the atomic number states the number of protons present in an atom whereas, the mass number indicates the total of the number of protons and the number neutrons present in an atom.
What are the atomic number of element?
The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).
Are all atoms same?
Everything in this world are matter and comprises of atoms. But each and every atom is unique. They are not the same at all. Every atom consists of three basic units protons, neutrons, and electrons and these units determine the physical and chemical properties of an atom and matter.
Is atomic mass same for all elements or is it different for different atoms explain?
The atomic mass ” is simply the total number of nuclear particles (protons + neutrons). Mostly it is different in different atoms but it is same in few cases, elements which have different atomic number but have same atomic mass are known as isobars.
Do all atoms contain the same number of sub atomic particles?
Atoms do not always contain the same number of electrons and protons, although this state is common. When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons).
What happened to the mass number and the atomic number of an element when it emits alpha radiation?
The emission of an alpha particle from a nucleus reduces the mass number of the nucleus by 4 and the atomic number by 2.
What happens to the mass number and the atomic number of an element when it emits y radiation?
Emitting a gamma ray makes no difference to the mass number or the atomic number but will make the nucleus more stable.
What happens to the mass number and the atomic number of an element when it emits alpha radiation *?
Alpha decay Protons are positively charged. When a nucleus emits an alpha particle, these changes happen: the mass number decreases by 4. the atomic number decreases by 2.