Which changes occur as a cadmium atom, Cd, becomes a cadmium ion, Cd2+?(1) The Cd atom gains two electrons and its radius decreases.
(2) The Cd atom gains two electrons and its radius increases.
(3) The Cd atom loses two electrons and its radius decreases.
(4) The Cd atom loses two electrons and its radius increases.

Answers

Answer 1

Answer: The answer is (3). To form the cation (positive ion), Cd must lose negative charge, so two electrons are lost. This loss in electrons also increases the effective nuclear charge/ reduces electron shielding. In other words, with two less electrons to hold, the nucleus exerts a stronger attractive force on the remaining electrons, so the electron cloud is pulled closer to the nucleus. The radius therefore decreases.

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Loses one electron and becomes a positively charged ion.

HELP UNDERSTAND, PLEASE! In a reaction, 15 moles of carbon dioxide are produced from 5 moles of iron (III) oxide and 15 moles of carbon monoxide. What is the mole ratio of carbon dioxide to carbon monoxide?

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1:3

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Answers

My best guess has to be 1:3

15:15 is equal to 1:1

Plants perform photosynthesis during the night

only during an eclipse

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Answers

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b. 6.47 x 10^2 atoms
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Answers

I got :
  7) C
  8) D
  9) B
10) D

The decimal difference in my calculations may be due to my rounding off or my use of the exact values in some cases.
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Answers

Answer: b. Brachytherapy

Explanation:

Ight I just here’s my first one

Answers

Answer:

Explanation:

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