Concept explainers
Interpretation:
The difference between the atoms of one element from those of another element is to be described.
Concept introduction:
In 1803 a scientist called Dalton gave an atomic theory to describe the structure of an atom. The atomic theory
Answer to Problem 1TAI
Atoms of one element are different from those of another element in the number of protons present in the nucleus of atoms or their
Explanation of Solution
The nucleus is in the center of the atom and electrons are outside the nucleus. In a neutral atom, protons are positively charged and electrons are negatively charged.
Mendeleev arranged the elements on a periodic table in order of their increasing
The number of protons in the nucleus of an element is called atomic number. In a neutral atom, the atomic number is also equal to the number of electrons because the overall charge in an atom is 0, so the number of protons is equal to the number of electrons.
Therefore, we can say that the atoms of one element differ from atoms of other elements in their atomic number.
An atom is made of particles called electrons, protons and neutrons. Atoms of one element are different from atoms of other elements. The number of protons in each element is unique.
Chapter U1 Solutions
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