The correctly drawn lewis structure for boron is B! To draw the lewis dot structure, you need to find the number of valance electrons (boron has 3) and then put a dot for each valance electron around the symbol for the atom. However, instead of putting three in different rings you're going to smush two together, so it has some sort of stability shown.
The wavelength of a photon is 622nm and it is a red light.
<h3>What is Wavelength?</h3>
The length of a waveform signal that is propagating in space or over a wire is measured by the separation between identical points (adjacent crests) in the adjacent cycles. This length is typically specified in meters (m), centimetres (cm), or millimetres (mm) in wireless systems (mm).
<h3>What is Photon?</h3>
A discrete bundle (or quantum) of electromagnetic (or light) energy is referred to as a photon. Photons move at the speed of light (3 108 m/s) because they have no mass.
<h3>What are the calculations?</h3>
λ = v/f
where, f = frequency = 4.82 × ![10^{14} Hz](https://tex.z-dn.net/?f=10%5E%7B14%7D%20Hz)
v = speed of light = 3 ×
m/s
λ = 3 ×
/ 4.82 × ![10^{14}](https://tex.z-dn.net/?f=10%5E%7B14%7D)
λ = 6.22 × ![10^{-7}](https://tex.z-dn.net/?f=10%5E%7B-7%7D)
λ = 622 nm.
Hence, the wavelength of a photon is 622nm and it is red light.
To know more about Wavelength, check out:
brainly.com/question/10750459
#SPJ1
Answer:
1.Most metal oxides are insoluble in water but some of these (e.g. Na2O.
Explanation:
2.: (i) A hissing sound is observed.
1.ii) The mixture starts boiling and lime water is obtained.
The NaOH can react with HCl with the formula: NaOH + HCl = NaCl + H2O. So if you want to neutralize the solution, the molar number of NaOH and NCl need to be equal. So we need 0.3*50/0.1=150 milliliters.
The correct option is: PERFORM BACKGROUND RESEARCH TO LEARN WHAT IS ALREADY KNOWN ABOUT THE QUESTION YOU ARE TRYING TO ANSWER.
No research is completely new, some research has been done in the past that is related to the investigation you want to carry out, so the first thing you should do is to find out what has been done in the past in your topic of interest and how you can fit in with your research, this is called literature review. Conducting a literature review is very important, because it helps you to avoid doing what other has done in the past.