0
What else can I help you with?
Identify the subatomic particle used to define an element and explain why this particle is used.?
no i cant answer it
What does the number of nucleus tell you about the element?
The number of the protons in the nucleus of a chemical element is equivalent to the atomic number; the atomic number define the position of this element in the periodic table (group, period). And from these we can suppose the chemical properties of this element.
Define atomic radii?
The atomic radii is the measure of the size of the atoms in a chemical element. This is the distance from the nucleus to the boundary of the electrons' cloud.
Why do all atoms of an element have the same atomic number?
The atomic number represents the number of protons in an atom's nucleus, which determines the element's identity. All atoms of the same element have the same number of protons in their nucleus, hence they all have the same atomic number.
Atoms of what element are used to define the atomic mass unit?
Carbon or more accurately, Carbon-12
How do you define the atomic mass of an element?
The total mass of the atom. In other words the total mass of the protons and neutrons of an atom
What do notice on the atomic number of elements in a row as one goes to the right of the table?
The atomic number increases from left to right across a period (row). This is because the atomic number is the number of protons in the nuclei of the atoms of each element. No two elements have the same atomic number. It is the protons that define an element.
Why atomic mass of an atom is define as relative atomic mass?
It is calculated as the ratio of the mass of one atom of an element to one twelfth of the mass of an atom of carbon-12. In fact, the weighted average of the mass of an atom of an element - weighted according to its isotopic abundance.
Define the term isotope explain how two isotopes of an element are different?
Isotopes are atoms of the same element that have different numbers of neutrons. Different isotopes of an element have the same atomic number, but different mass numbers. I hope I helped! ^_^
Define what an element key contains?
An element key shows you the name of the element, its atomic number, its symbol, and its average atomic mass.
What type of bond must be present for most chemists to define molecules?
"covalent" OR "covalent bond"
What element is used to make atomic clocks?
The atom of the isotope caesium 133; the definition of second in SI is based on this atom.
