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Are there any elements that have atoms of more than one molecular mass?
Elements are defined by the number of protons in their atoms, which gives them a specific atomic number. However, many elements have isotopes, which are atoms with the same number of protons but different numbers of neutrons, resulting in different atomic masses. For example, carbon has isotopes like carbon-12 and carbon-14, which have different molecular masses. Thus, while an element itself has a defined atomic number, it can exhibit a range of atomic masses due to its isotopes.
How many chemical elements occur naturaly in the universe?
There are 94 naturally occurring chemical elements in the universe. These elements range from hydrogen, the most abundant, to uranium, the heaviest naturally occurring element.
What kind of compounds do elements make when the combine?
The entire range of chemical compounds available in the universe
Does an isotope of an element have a different atomic mass?
Yes, isotopes of an element have the same number of protons but different numbers of neutrons, leading to variations in atomic mass. This is why the atomic mass on the periodic table is often listed as a range for an element.
Why do some elements not have relative atomic masses eg. radium?
All the elements has an atomic weight; sometimes for the unstable radioactive elements is indicated only the value of the atomic mass of the most stable isotope.The term atomic weight is used for elements and the term atomic mass for isotopes (after the rules and the tradition of IUPAC).
Which is more the number of elements or the number of isotopes?
The number of elements is more than the number of isotopes. There are 118 known elements on the periodic table, while each element can have multiple isotopes with varying numbers of neutrons. The number of isotopes per element can range from a few to dozens, depending on the element.
Isotopes are atoms of an element with identical chemical properties but with different?
What differentiates isotopes between the same elements are their neutron (n) count. For example, all Uranium atoms contain 92-protons, which also is its atomic number. However, its 25 isotopes range from 217 to 242 neutrons.
What are atoms of the same element that have different neutron numbers called?
Every atom of the same element is also categorized by its number of neutrons. An atom with a certain number of neutrons is an "isotope." Two atoms of the same element (same quantity of protons) can be different isotopes (different quantity of neutrons). Some isotopes are unstable, so most stable isotopes of an element are withing a range of a few numbers. For example, stable isotopes of carbon are Carbon-12 and Carbon-13.
How many chemical elements occur naturaly in the universe?
There are 94 naturally occurring chemical elements in the universe. These elements range from hydrogen, the most abundant, to uranium, the heaviest naturally occurring element.
What is the special chemical property of hydrogen?
One special chemical property of hydrogen is its ability to form covalent bonds with other elements, resulting in a wide range of compounds. This property allows hydrogen to participate in various chemical reactions and contribute to the diversity of substances found in nature.
What kind of compounds do elements make when the combine?
The entire range of chemical compounds available in the universe
Does an isotope of an element have a different atomic mass?
Yes, isotopes of an element have the same number of protons but different numbers of neutrons, leading to variations in atomic mass. This is why the atomic mass on the periodic table is often listed as a range for an element.
What is unusual about the isotopic composition of bromine?
Bromine has two stable isotopes, bromine-79 and bromine-81, which are the only two isotopes that occur naturally. This limited natural isotopic composition is unusual compared to other elements that have a wider range of stable isotopes.
What do elements combine to form?
Elements combine to form compounds through chemical reactions. These compounds have different properties than their individual elements, resulting in a wide range of substances found in nature and synthesized in laboratories.
What is the total number of isotopes in platinum?
Platinum has six naturally occurring isotopes. They range from 190 to 196 in atomic mass. There are 31 synthetic isotopes in platinum that range from 166 to 202 in atomic mass.
What chemical changes oxygen into energy?
Oxygen is not changed into energy. However, energy may be released when it combines with a range of other chemical compounds and elements.
What is the range of the radii of most atoms in nanometers(nm)?
The atomic radii of most chemical elements are in the range 75-250 pm or 0,075-0,25 nm.
