Answer:
1 orbital (shells) and 1 valence electron
Explanation:
If an atom of hydrogen is a neutral atom, it will have 1 proton in the nucleus and 1 electron in the electron shell.
Mass because an intensive property is a physical quantity whose value does not depend on the amount of the substance for which it is measured. Examples of extensive properties include: volume, mass, size, weight, and length.
The list that only includes terms that describe Cesium (Cs) is option (b) i.e atom, element, pure substance .
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What do you mean by the term atom , element, pure substance ?
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Atom, is the smallest unit of matter that has the characteristic properties of a chemical element .The atom is the basic building block of chemistry.
Element is a pure substance consisting of only one type of atom which all have the same numbers of protons. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.
Hence ,in the list that only includes terms that describe Cesium (Cs) is option (b) i.e atom, element, pure substance .
Learn more about atom and element, here:
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There are 4 states of matter
1.solid
2.liquid
3.gas
4.plasma