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shusha [124]
3 years ago
15

How does the modern periodic table arrange elements?

Chemistry
2 answers:
katrin2010 [14]3 years ago
6 0
By increasing atomic number
sergiy2304 [10]3 years ago
4 0

Answer:

B. By atomic number.

Explanation:

The atom is the most basic unit of matter with properties of a chemical element. The atom is the fundamental component of all matter. All atoms are made up of a central nucleus in which there are positively charged particles, the protons, around which other negatively charged particles, the electrons, move. The nucleus of the atom also has neutrons, which have a neutral charge.

The atomic number, which is represented by the letter Z, indicates the number of protons that are present in the nucleus of an atom. Determine the identity of an atom and its properties.

The atomic number is used to classify the elements within the periodic table of the elements.

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The Lewis acids are electron pair acceptors due to the availability of vacant orbitals they accept electrons from the donor compounds.

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  • CCl_{3}^{-} is not a Lewis acid due to the presence of negative charge which represents that there are electrons available for donation.
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Hence, (CH_3CH_2)_2CH^{+} and BBr_3 are Lewis acids.

3 0
3 years ago
Calculate the decrease in temperarure when 2.00 L at 20.0 degrees celsius is compressed to 1.00 L.
Serga [27]
I suspect that the pressure of this change is constant therefore

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V/T = V/T
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Initially we have 2L at 20 degress what temperature will be at 1L.

2/20 = 1/T
0.1 = 1/T
0.1T = 1
T = 1/0.1
T = 10 degress celsius.

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Explanation:

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