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Nata [24]
3 years ago
8

Why is an element's atomic mass not listed as a whole number on the periodic table?

Chemistry
1 answer:
BARSIC [14]3 years ago
5 0

Answer: it represents an average mass of all isotopes

Explanation:

i just took the test

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Represent the formation of cations for the following metal atoms using electron dot structures. (a) Al (b) Sr (c) Ba​
vagabundo [1.1K]

the formation of cations by using electron dot structures are :

a) Al

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Al .    losing the three valence electrons makes the Al³⁺

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b) Sr :  

  Sr :  losing the two valence electrons makes Sr²⁺

c) Ba

: Ba , losing the two valence electrons makes it Ba²⁺

A Lewis electron dot diagram is a representation of the valence electrons of an atom that employments specks around the image of the element. The number of dots equals the number of valence electrons within the molecule. These dots are arranged to the right and left and over and underneath the symbol, with no more than two dots on a side. Cations are the positive ions shaped by the loss of one or more electrons. The foremost commonly shaped cations of the representative elements are those that include the loss of all of the valence electrons.

To know more about the lewis electron dot diagram refer to the link brainly.com/question/14191114?referrer=searchResults.

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How many moles of hydrogen are produced when 6.28 mil of oxygen form
sergejj [24]
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yarga [219]

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Passive prostheses are:
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Passive prostheses are self-regulating, as shown in the first answer option.

We can arrive at this answer because:

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