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VikaD [51]
3 years ago
11

Compare and contrast atoms elements compounds and molecules

Chemistry
1 answer:
N76 [4]3 years ago
6 0

atoms = smallest unit of an element

elements = contain only one type of atom

compounds = two or more elements that are chemically bound together

molecules = a group of atoms bonded together

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Explanation:

Beryllium is a group 2 element and its atomic number is 4. Electronic configuration of beryllium is 1s^{2}2s^{2}.

Since, a beryllium contains two valence electrons so, in order to attain stability it will readily lose its 2 valence electrons.

Therefore, a beryllium atom upon losing two valence electrons will acquire a +2 charge.

Thus, we can conclude that the net ion charge of Beryllium is +2.

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All of the substances on the periodic table are classified as elements except
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Answer: all elements in the periodic table is classified as elements

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The structure of the table shows periodic trends. The seven rows of the table, called periods, generally have metals on the left and nonmetals on the right. The columns, called groups, contain elements with similar chemical behaviours. Six groups have accepted names as well as assigned numbers: for example, group 17 elements are the halogens; and group 18 are the noble gases

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