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What makes up the atoms mass number?
The mass number is the average total of the number of protons and neutrons in the atomic nuclei of all the isotopes of that element on earth. Thus, the average number of neutrons in that element can be found by subtracting the atomic number from the mass number.
What Make up 50 percent of the atomic mass of the nucleus?
Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.
Two atoms with different mass number but the same atomic number are called?
They are called isotopes. Isotopes are atoms of the same element, and have the same atomic number (number of protons). However , they differ in the number of neutrons, so their atomic masses aren't the same. For example, chlorine has two stable isotopes, ³⁵Cl which makes up 76% and ³⁷Cl makes up 24%. ³⁶Cl is only a trace amount and is radioactive. The superscript in front of the chemical symbol is the mass number. The mass number is the sum of the protons and neutrons in the nucleus of the atom, in this case chlorine.
What makes up nearly all of the atoms's mass?
The sum of all Protons and Neutrons.
The nucleus makes up 99 percent of the atoms what?
The nucleus makes up nearly all of the mass of an atom, with over 99% of its mass concentrated in the nucleus. Within the nucleus, most of the mass is found in the protons and neutrons, while the electrons surrounding the nucleus contribute very little to the overall mass.
What is mass proportional to the number that makes up an object?
atoms
What thing makes up matter?
Mass and atoms
What makes up of the atoms?
The nucleus makes up most of the mass and the other things in the atom make up the rest.
How can Atoms vary?
Atoms and elements can vary in many ways. Atoms mainly vary by having different numbers of protons, electrons, and neutrons. The count of protons makes up an elements mass number.
What makes up the atoms mass number?
The mass number is the average total of the number of protons and neutrons in the atomic nuclei of all the isotopes of that element on earth. Thus, the average number of neutrons in that element can be found by subtracting the atomic number from the mass number.
What mass of He contains the same number of atoms as 5.0 g Kr?
To find the mass of He containing the same number of atoms as 5.0 g Kr, we need to use the fact that atoms are indivisible entities. First, determine the number of atoms in 5.0 g Kr using the molar mass of Kr. Then, calculate the mass of He containing the same number of atoms by dividing the atomic mass of He by Avogadro's number and scaling it up to match the number of Kr atoms.
What Make up 50 percent of the atomic mass of the nucleus?
Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.Well, this is not exact, but smaller atoms have about the same number (and mass) of neutrons and of protons. Heavier atoms have a larger percentage of their mass in neutrons.
How many atoms of the element makes up molar mass?
The molar mass is the sum of the atomic weights of atoms contained in the molecule.
Two atoms with different mass number but the same atomic number are called?
They are called isotopes. Isotopes are atoms of the same element, and have the same atomic number (number of protons). However , they differ in the number of neutrons, so their atomic masses aren't the same. For example, chlorine has two stable isotopes, ³⁵Cl which makes up 76% and ³⁷Cl makes up 24%. ³⁶Cl is only a trace amount and is radioactive. The superscript in front of the chemical symbol is the mass number. The mass number is the sum of the protons and neutrons in the nucleus of the atom, in this case chlorine.
What makes up nearly all of the atoms's mass?
The sum of all Protons and Neutrons.
What makes up the mass of atoms?
Protons and neutrons are the primary contributors to an atom's mass. Electrons make up an insignificant amount of mass. Atomic mass is determined by adding the number of protons and neutrons in a nucleus.
How do you find the mass number of an atoms?
Can't you check the periodic table dumbo anyways just add up the protons and electrons to get mass number.
