7. what are the two terms in which atom exist?
Answers
Answer:
Neutral Atoms
Some atoms exist naturally as neutral, or uncharged, atoms. A single uncharged atom has an equal number of protons (+) and electrons (–). An uncharged atom is electrically neutral because electrons and protons have opposite charges of equal sizes.
Answer:
109 different types
There are more than 109 different types of atom - one for each element. Differences between the atoms give the elements their different chemical properties. In 2001, there were 115 known elements. However, those above 109 are highly unstable and have been made in only tiny quantities.
Atoms in a chemical element that have different numbers of neutrons than protons and electrons are called isotopes. The atoms in a particular element have an identical number of protons and electrons but can have varying numbers of neutrons. Hydrogen is a common element on earth.
Explanation:
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