SECTION 1: True (T) or False (F) (2 points each) 1. When an electron emits energ
ID: 590008 • Letter: S
Question
SECTION 1: True (T) or False (F) (2 points each) 1. When an electron emits energy in the form of light, it drops from a higher energy level to a lower energy level. 2. When a white solid is dissolved in a beaker containing room-temperature water, the solution becomes hot. This is an example of an endothermic reaction. 3. The Lewis structure of NO2 conforms to the octet rule. 4. For any form of visible light, the frequency is proportional to the energy. 5. When sulfuric acid reacts with sodium hydroxide, the products are water and sodium sulfate. 6. The ammonium ion has tetrahedral geometry. 7. In the Paper Chromatography experiment, the retention factor measures the ratio of the distance that the ion moves to the distance that the elution solvent moves.Explanation / Answer
1.
when an electron jumps froms higher level to lower energy level, energy is released in the form of light. So it is true
2.
when a solid is dropped in a water and it becomes hot means, it releases heat and it is exothermic reaction. So given statement is false.
3.
lewis structure of NO2 has a single electron on Nitrogen atom and nitrogen have only 7 electrons around it. so it violates octet rule. So the statement is false.
4.
we know
energy = plank's constant * frequency of light
so the statement is true
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