Artifficial radioactive elements are situated in:
- period 7
- actinoids (actinides) family
The Earth's mantle is primarily made up of silicate minerals containing elements such as oxygen, silicon, magnesium, and iron. These elements make up the majority of the mantle's composition.
Without modifiers, the word "sand" refers to a substance that is almost entirely silicon dioxide.
Yes, americium is a metal. It might also be noted that it is radioactive; it has no stable isotopes.
Yes, the majority of the human body is made up of these six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. They account for about 99% of the body's mass. Other essential elements in smaller amounts include potassium, sulfur, sodium, chlorine, and magnesium.
Nitrogen can combine with various elements such as hydrogen to form ammonia (NH3), oxygen to form nitrogen oxide (NOx), carbon to form cyanides (C-N), and many other elements to form a wide range of nitrogen compounds.
These ions are Na+ and Cl-.
The two chambers of the United State Congress are the Senate (following recent November elections, under a Democratic majority) and the House of Representatives (after elections, under a Republican majority).
A majority of the elements are "Transition Metals"
The majority of elements in the Periodic Table are metals.
The majority of the elements in the p-block are non-metals.
The majority of the elements are transition metals, if you mean the type of element.
All elements after Uranium (U) are radioactive. Much of that is due to the fact that they are so large and unstable, that decay causes more stability. This description ignores complex quantum mechanics such as the weak force, one of the four fundamental forces, driving radioactive decay.
Uranium combine with the majority of other elements; also uranium has alloys with the majority of metals.
Radioactive elements make up a small fraction of all naturally occurring elements in Earth's crust. Most elements are stable and non-radioactive. However, even though they are a minority, radioactive elements play important roles in various scientific, medical, and industrial applications.
C. Metals
The majority of chemical elements can be combined with bromine.
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