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yes even deadlier
If you're referring to the lead in pencils, it's graphite, which is made of Carbon (C). If you're referring to actual lead, lead itself is an atom (Pb).
If you're referring to the nucleus of an atom, the answer is electrons.
It always has an oxygen atom and a hydrogen atom. There is always at least another atom depending on which chemical formula you are referring to.
You are probably referring to the electrons. It doesn't exactly "circle" the nucleus of an atom, but it does exist in an orbit around the nucleus.
You are probably referring to the electrons. It doesn't exactly "circle" the nucleus of an atom, but it does exist in an orbit around the nucleus.
The atom you are referring to is 17O, an isotope of oxgen. Its atomic mass is 17 amu.
You are PROBABLY referring to the "Bohr Model" of the atom.
The mass number is the number of the Atomic Mass. The atomic mass is the mass of the atom of the element. There is no difference between the two, except mass number is referring to the number, while atomic mass is referring to the atom's mass in general, which is also expressed by a number. Basically, both terms mean the exact same thing.
In what proses? You can be referring to photosynthesis and/or cellular respiration. Question is unable to be answered.
You might be referring to atomos which means "that which cannot be divided." It is the root of the word atom.
Not sure what you are referring to. Splitting the atom is something that has been known about since before WW2, and certainly from the 1940's onwards.