BIOCHEMISTRY
ATOMIC STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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molecules
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atoms
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neutrons
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compounds
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Detailed explanation-1: -A chemical element consists of those atoms with a specific number of protons in the nucleus; this number is called the atomic number. The atoms of an element may differ in the number of neutrons; atoms with different neutron numbers are said to be different isotopes of the element.
Detailed explanation-2: -The modern atomic theory, proposed about 1803 by the English chemist John Dalton (Figure 4.2. 1), is a fundamental concept that states that all elements are composed of atoms.
Detailed explanation-3: -Elements and Atoms. An element is a pure substance. It cannot be broken down into other types of substances. Each element is made up of just one type of atom.
Detailed explanation-4: -Elements are made up of atoms, the smallest particle that has any of the properties of the element.