Nitrogen, iron, silicon, carbon, oxygen
It is 0.375It is 0.375It is 0.375It is 0.375
Yes, grandparents had exactly three boys (including my dad) and three girls.
-- 893 of them have no 4's. -- Three of them have exactly one 4: 4xx, x4x, and xx4. -- Three of them have exactly 2 4's: 44x, 4x4, and x44. -- One of them has exactly three 4's: 444. -- None has more than three 4's.
Sure, that is exactly what the triangle inequality tells us!
There are three common elements: C, H, and O.
There are three common elements: C, H, and O.
The three most common elements in the Earth's crust are oxygen, silicon, and aluminum.
The three most common elements of life are carbon, hydrogen, and oxygen. These elements are essential components of biological molecules like carbohydrates, lipids, nucleic acids, and proteins that make up living organisms.
there all metals, or nonmetals
Three electrons in their valency orbit.
There are literally millions (and that's being extremely conservative) of organic compounds which contain three elements (even more, if you take the question as meaning "at least three" instead of "exactly three"). If you're just looking for an example of one that contains exactly three: furan. The hydro fluro acetic acid contains three groups.
2 out of 8
Lithium , sodium and potassium are the three elements having 1 valence electron in their outer shell.
Well, the fact that you said "trace elements" makes me think you probably don't mean hydrogen or helium, which are present in large amounts in stars.After those, the three most common elements would be oxygen, carbon ... and then it gets complicated. Most probably the third would be neon, but iron and nitrogen are also pretty common.
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Nitrogen, iron, silicon, carbon, oxygen