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Crazy boy [7]
3 years ago
8

Of the following three atoms, one tends to lose three electrons, another tends to lose two electrons, and another tends to lose

one electron. Rank these atoms in order of the number of electrons they tend to lose, from most to fewest: potassium, K; calcium, Ca; gallium, Ga. Rank from most to fewest.
Chemistry
1 answer:
vodomira [7]3 years ago
5 0

Answer: Ga > Ca > K

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies. The metals tend to get stable by losing electrons to attain noble gas configuration.

K:19:1s^22s^22p^63s^23p^64s^1

K^+:18:1s^22s^22p^63s^23p^6

Ca:20:1s^22s^22p^63s^23p^64s^2

Ca^{2+}:18:1s^22s^22p^63s^23p^6

Ga:31:1s^22s^22p^63s^23p^64s^23d^{10}4s^24p^1

Ga^{3+}:28:1s^22s^22p^63s^23p^64s^23d^{10}

Thus gallium (Ga) loses three electrons, Calcium (Ca) loses 2 electrons and Potassium (K) loses one electron.

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Answer:

{\rm 1\; C_3H_8} + {\rm 5\; O_2} \to {3\; \rm CO_2} + {4\; \rm H_2O}.

Explanation:

{\rm ?\; C_3H_8} + {\rm ?\; O_2} \to {?\; \rm CO_2} + {?\; \rm H_2O}.

Among the four species in this reaction, \rm C_3H_8 is species with the largest number of atoms per molecule. Assume that the coefficient of this compound is 1.

{\rm 1\; C_3H_8} + {\rm ?\; O_2} \to {?\; \rm CO_2} + {?\; \rm H_2O}.

Number of atoms on the left-hand side of the reaction:

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  • \rm H: 1 \times 8 = 8.
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By the conservation of atoms, the number of atoms on the right-hand side of the reaction should match those on the left-hand side. In this reaction, \rm CO_2 is the only product with carbon atoms, whereas \rm H_2O is the only product with hydrogen atoms. These 3 carbon atoms and 8 hydrogen atoms would correspond to:

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{\rm 1\; C_3H_8} + {\rm ?\; O_2} \to {3\; \rm CO_2} + {4\; \rm H_2O}.

Number of atoms on the right-hand side of the reaction:

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The number of \rm O atoms on the left-hand side should match those on the right-hand side. In this reaction, \rm O_2 is the only reactant with \rm O\! atoms. These 10 \rm \! O atoms would correspond to:

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{\rm 1\; C_3H_8} + {\rm 5\; O_2} \to {3\; \rm CO_2} + {4\; \rm H_2O}.

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I don't know why mass is there but hope this helps! :)

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Explain how the removal of thermal energy (heat) from matter affects its particles
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I recently did this assignment!

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Hope this helped!

Have an Amazing day!

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