The cloud with those characteristics is #1
Intensity has no affect on whether or not the photoelectric effect occurs. The determining property is frequency and since frequency and wavelength are inversely proportional, wavelength matters as well. If a frequency of light can't cause the photoelectric effect to happen, no matter what the intensity is, the light can't make it happen.
I hope this helps. Let me know in the comments if anything is unclear.
What is the correct name for the cyclic alkane shown on the right? 1,3-dimethyl, 3-ethylcyclohexane 1-ethyl, 1,4-dimethylcyclohexane 1-ethyl-1,3-dimethylcyclohexane 1-ethyl-1,3-dimethylcyclopentane 1,3 dimethyl, 3- ethylcyclopentane A
Answer:
They decrease, because of the stronger effective nuclear charge.
Explanation:
- Atomic radii decreases from left to right across a period.
- This is due to the increase in the no. of protons and electrons through the period.
- One proton has a greater effect than one electron.
- So, electrons are attracted towards the nucleus and resulting in a smaller atomic radii.
<em>Thus, the right choice is: They decrease, because of the stronger effective nuclear charge.</em>
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