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Atoms are electrically neutral by definition, and electrons and protons have an equal but opposite electrical charge. So you can't come up with a combination of electrons and protons for an atom where the number of electrons and protons are unequal. However, an atom can lose electrons, but it is then no longer called an atom but rather an ion.
Wiki User
∙ 13y ago
Wiki User
∙ 15y agoNone of the elements of the Periodic Table have the same number of protons. All elements have their own unique atomic (proton) number which defines how many protons that element has in its atoms. Just a note that the atomic number is also called the proton number. To know which number is which the atomic number is always smaller. The Atomic number gives both the proton and electrion number as these most be the same due to the charges for it to be an atom.
Wiki User
∙ 13y agoThey are called: Isotopes (of the same element)
Example:
Three known isotopes of carbon are:
- C-12, 6 protons + 6 neutrons in nucleus, mass number 12, most common 99%
- C-13, 6 protons + 7 neutrons in nucleus, mass number 13, less common 1%
- C-14, 6 protons + 8 neutrons in nucleus, mass number 14, unstable, used in archeological Carbon dating (half-life time 5730 year)
Wiki User
∙ 10y agoWhen two atoms have the same number of protons they are atoms of the same element. You might mean two atoms with the same number of protons and different numbers of neutrons. These are called isotopes of an element.
Wiki User
∙ 12y agoThe answer is NONMETALS.
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What does the atomic number tells you about the element?
It tells you (1) how many protons are in the element, and (2) what the element is since all atoms of an element will have the same number of protons.It's D. The number of protons in its atoms.It tells how many protons/electrons that element has.
What causes atoms of the same elements to have different atomic masses?
Elements have a certain number of protons(+), neutrons(0) and electrons(-). The atomic number shows the number of protons and electrons in the element (has to have the same number of each to stay stable). The atomic mass shows the number of neutrons. For example, Hydrogen has an atomic mass of ~1.01 (and an atomic number of 1). That means that it has 1 electron and 1 proton but no neutron (1 proton+0 neutrons=1). Helium has an atomic mass of ~4.00 (and an atomic number of 2). That means that it has 2 electrons, 2 protons and 2 neutrons (2 protons+2 neutrons=4). Hope you can understand. :S
How many protons in positive two ion of calcium?
The same number as in an atom of Ca, the same as the atomic number of Ca. An ion will have a different number of electrons than protons, so it is not 20. Only neutral atoms have the same number of electrons as protons, which is the same as the atomic number. A calcium ion (Ca+2) has two less electrons than protons (having lost two to fulfill the octet rule), so it has 18 electrons.
Can 2 isotopes of the same element differ in the number of protons?
An element is defined by the number of protons, so this cannot vary. Isotopes of a particular element are different in the number of neutrons within the atoms. These isotopes are said to be comparatively "lighter" or "heavier" than other isotopes based on the total of protons and neutrons (atomic mass).
What is a pure substance all the atoms have the same atomic number or number of protons?
Any substance on the periodic table of elements. e.g. Technetium (43), Hydrogen (1), Helium, (2)
If you have 2 atoms have the same number of protons but differernt number what will they have the same?
They will have the same atomic number.
If you have 2 atoms have the same number of protons but different number of neutrons what will they will have the same?
No, they will not be considered isotopes since isotopes are atoms of same element (therefore, have same number of protons). However, the types of atoms which have same atomic mass number but different no. of protons, they are called isobars. Eg:- Calcium and Argon = =
How are 2 isotopes of an element similar?
Their atoms have the same number of protons and electrons and therefore have the same chemical properties. However, the atoms do differ in the number of neutrons and so their physical properties are slightly different.
Why can 2 atoms of the same element have different numbers of neutrons but must always have the same number of protons?
They are called Isotopes
What are the two atoms that have th same number of proton called?
they are the same element because an element has an atomic number through its number of protons so if there was an element with 2 protons it would be number 2 in the periodic table which is helium, if another element has 2 protons it should be helium still, if it wasn't modified in anyway
What is thenumber of protons in oxygen?
it has 4 protons and 15 electrons!!!Ans 2.Oxygen has 8 protons.p.s. like all atoms, it has the same number of electrons as protons : 8.
Why does helium atom have no electrical charge?
Helium has 2 protons and 2 electrons. So the charge is neutralized. Besides, all atoms have neutral charge as the number of protons and electrons will be the same
What does the atomic number tells you about the element?
It tells you (1) how many protons are in the element, and (2) what the element is since all atoms of an element will have the same number of protons.It's D. The number of protons in its atoms.It tells how many protons/electrons that element has.
How atoms of the same element can be different?
An element by definition refers to all atoms with the same number of protons; so any atom with 1 proton is the same element as all other atoms with one proton; which would be helium. And then, all atoms with 2 protons would be the same element; hydrogen. But the atoms that have 1 proton and the atoms that have 2 protons cannot be the same element.An ion is an element with a different amount of electrons, where if it is a positive ion it is missing an election compared to a "normal" element and if it is a negative ion it would have an extra election compared to a "normal" element.An isotope is a member of the same element but it has a different number of neutrons.
What number is 27?
27, the reason being, that Cobalt has 27 Protons. All atoms are sorted by the number of protons that they have, such as Helium which has 2 protons, thus having an atomic number of 2.
What does an element atomic number tell about the elements?
It tells you (1) how many protons are in the element, and (2) what the element is since all atoms of an element will have the same number of protons.It's D. The number of protons in its atoms.It tells how many protons/electrons that element has.
Why can 2 atoms of the same element have different numbers of neutrons but must always have the same number of protons explain please?
Without the same number of protons it would be a completely different element on the periodic table and would be considerd an isomer. Take Chlorine-35 and Chlorine-37 for example... they are also isomers because they have a different number of protons. Therefore are different elements.
