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When determining the mass of an atom the electron are not considered why can scientists disregard the electrons?
Wiki User
∙ 11y ago
Usually they are measuring just the necleus of the atom since it would be a whole number. This is called finding the Mass number.
The atomic weight is the whole atom together, which is a whole lot of decimals. So they take the atomic weight and round it to a whole number for the mass number.
For example, Boron (an element on the table) has an atomic weight of 10.811. But scientists round the number upward to 11 to be the Mass number.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoIf we give a proton a value of 1, the value of an electron would be approximately 1/1875, too small in this case to be truly significant.
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What is the number of electrons in outer shell called?
The number of electrons in the outer shell are called Valence electrons and are important in determining how the atom reacts chemically with other atoms.
What is the most important in determining the periodic trends across a period?
increasing number of electrons
What is the core electrons and valence electrons for Li ion?
Li+ ion has only 2 electrons in its only shell and they could be considered as both core and valence electrons.
How do scientists classify elements?
If you are thinking about the name , then the answer is random , but if you want to know where it will be on/in The PSE then its by the number of electrons they have (electronic configuration).
How did the results on j j thomsons experiments change how scientists thought about atoms?
evaluate the impact of research on the way scientists thought about atoms
When determining the mass of an atom the electrons are not considered. Why can scientists disregard the electrons?
Usually they are measuring just the necleus of the atom since it would be a whole number. This is called finding the Mass number. The atomic weight is the whole atom together, which is a whole lot of decimals. So they take the atomic weight and round it to a whole number for the mass number. For example, Boron (an element on the table) has an atomic weight of 10.811. But scientists round the number upward to 11 to be the Mass number.
When determining the mass of an atom the electrons are not considered can scientists disregard the electrons?
Usually they are measuring just the necleus of the atom since it would be a whole number. This is called finding the Mass number. The atomic weight is the whole atom together, which is a whole lot of decimals. So they take the atomic weight and round it to a whole number for the mass number. For example, Boron (an element on the table) has an atomic weight of 10.811. But scientists round the number upward to 11 to be the Mass number.
Why is it not necessary to include electrons when determining the mass of an atom?
While electrons do technically have a measurable mass, the proportion of the overall mass of the atom contributed by the electrons is negligible. The protons and neutrons in the nucleus contribute the vast majority of the mass of the atom and thus are the only parts considered.
Determining the Electron group geometry of a central atom?
EGG=(#lone pair electrons)+(# of bond pair electrons)
What is the number of electrons in outer shell called?
The number of electrons in the outer shell are called Valence electrons and are important in determining how the atom reacts chemically with other atoms.
What do scientists call the place where electrons are found?
your home
Which subatomic particle plays the greatest part in determining the propertiesof an element?
Electrons
Why electrons are typically not included when determining the mass of an atom?
its because they are extremely small
Why did scientists revise bohrs model?
Scientists determined that electrons do not orbit the nucleus like planets. Instead, electrons can be anywhere in a cloud like region around the nucleus
What are protons neutrons and electrons considered?
protons neutrons and electrons are considered tiny parts of matter
What is the most important in determining the periodic trends across a period?
increasing number of electrons
What is key in determining whether an atom will form a bond with another atom?
Valence electrons
