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What are the correct parts of an atom?
There are three parts to an atom. The nucleus consists of a proton or a combination protons and neutrons. The number of protons is the atomic number, and determines the element. For example, hydrogen has one proton. Helium has two protons and two neutrons. Varying numbers of neutrons represent different isotopes of that element. Deuterium is hydrogen with an additional neutron. The number of protons is generally matched by the number of electrons. If there is an imbalance, an ion (charged element or molecule) is the result. Electrons have a tiny fraction of the mass of either protons or neutrons.
Can two different element have the same number of proton?
No, the number of protons determines the element. Each element has a unique number of protons in its nucleus, which is what defines its identity. If two elements had the same number of protons, they would be the same element.
An atoms mass number equals the combination of what two things?
The mass number of an element is equal to the sum of the elements neutrons and protons.
Atomic masses of any two elements contain the same number of?
protons and neutrons. This is because the atomic mass of an element is calculated by adding the number of protons and neutrons in the nucleus of an atom. The number of protons determines the element's identity, while the number of neutrons affects its stability.
Two isotopes of the same element have the same number of what?
They have the same number of protons and different number of neutrons.
Number of protons and electrons in lithium?
Lithium has three protons and three electrons. The number of electrons always equals the number of protons. Lithium has two isotopes, one with three neutrons and one with four neutrons.
Which is not unique to each element?
Although the number of protons in the nuclei of the atoms of an element is constant, the number of neutrons varies in general. For instance, hydrogen comes in three forms, known as isotopes, one with no neutrons in its nucleus, one with one neutron and one isotope with two neutrons in its nucleus.
Why is it impossible for the atomic number of element to be greater than its mass number?
The atomic number of an element is the number of protons in the nucleus of that element (and in any isotope of that element). The mass number of an element is the number of protons plus the number of neutrons in the nucleus of that element (and that number will differ for each isotope of that element). In any given element (save hydrogen) there are always one or more neutrons in the nucleus. As the atomic number is just the number of protons, it will always be less than the number of protons plus the number of neutrons. Always. The "outcast" is hydrogen. Most hydrogen has just a single proton in the nucleus. That means for those atoms of hydrogen, the atomic number (number of protons) and the mass number (number of protons plus the number of neutrons) will be one. (Recall that there are no neutrons in "regular" hydrogen.) Hydrogen does have two other isotopes. One has one neutron and the other has two neutrons. The atomic number for each of those two isotopes is still one, but their mass numbers will be two and three, respectively.
What element has 3 protons and 3 electrons?
The only element with three protons is lithium.The isotope lithium-6, has 3 neutrons and is the rarer of the two stable isotopes of lithium.Most lithium is isotope lithium-7, containing 3 protons, 3 electrons, and 4 neutrons. It makes up about 92.5 percent of the lithium found on Earth.
What are atoms that have the same element but different neutrons?
IsotopesThe number of protons in the nucleus of an atom determines the element. The number of neutrons can vary. If two atoms of the same element have a different number of neutrons in their nuclei, they are isotopes of that element.
If two elements have the same number of protons but different number of neutrons can they be atoms of the same element.?
Yes. If two atoms have the same number of protons then by definition they are the same element.
How many protons and neutrons do atoms of the same element have?
Atoms of the same element usually have the same number of protons but differ slightly in the number of neutrons. The number of neutrons are usually about the number of protons so it can be estimated as so. For example, there are two relatively common isotopes of sodium: sodium 22 and sodium 23, where the number is the total number of protons and neutrons. Sodium 22 has 11 neutrons and sodium 23 has 12 neutrons but the sodium atom has 11 protons. For further information, look up isotopes.
