Francium occurs naturally, although extremely rare. It can and is made in labs. Although it is considered a naturally occurring element, there is only about one ounce of it in the Earth's crust at any one time. Scientists reproduce it in labs so they can study it, ect. So little is known about Francium now; if we didn't reproduce it in labs we would know next to nothing about it.
"Synthetic" could be another word for something that does not occur naturally.
Mendelevium is a manmade element and does not occur naturally in nature. It is produced by bombarding einsteinium with alpha particles in a particle accelerator.
Not all the elements occur naturally; some elements are man-made.
no, steel is one of many manmade alloys. the closest natural material to steel are nickel-iron meteorites.
It is an isotope that occurs in nature, and is not manmade. Isotopes, by the way, are atoms that have the same number of protons, but different number of neutrons. The atomic number is the same, but atomic weight (or mass) is different. For instance, Carbon can be Carbon 10, 11, 12, or 14. They are all carbon.
Artificial means that it does not occur naturally. If something is artificial it is manmade.
"Synthetic" could be another word for something that does not occur naturally.
Mendelevium is a manmade element and does not occur naturally in nature. It is produced by bombarding einsteinium with alpha particles in a particle accelerator.
Not all the elements occur naturally; some elements are man-made.
No, gold has only one naturally occurring isotope and it is non-radioactive.
The isotopes are not manufactured for specific uses, they occur in nature naturally.
no, steel is one of many manmade alloys. the closest natural material to steel are nickel-iron meteorites.
It is an isotope that occurs in nature, and is not manmade. Isotopes, by the way, are atoms that have the same number of protons, but different number of neutrons. The atomic number is the same, but atomic weight (or mass) is different. For instance, Carbon can be Carbon 10, 11, 12, or 14. They are all carbon.
No, phosphorus-32 is a radioactive isotope of phosphorus and is not found naturally in significant amounts. It is typically produced in nuclear reactors or particle accelerators.
Both. Zinc can be found in nature and also can be manmade.
No, it is a naturally occurring petrochemical.
No. By definition a mineral is naturally occurring.