Answer:
Copy and paste "Electromagnetic waves are categorized according to their frequency f or, equivalently, according to their wavelength λ = c/f. Visible light has a wavelength range from ~400 nm to ~700 nm. Violet light has a wavelength of ~400 nm, and a frequency of ~7.5*1014 Hz. Red light has a wavelength of ~700 nm, and a frequency of ~4.3*1014 Hz." into google, and the correct website pops up as the first result.
Explanation:
I tried to link the website that I use to convert wavelengths and frequencies into types of light, but it deleted my answer, so I guess we're doing it this way. As for converting the wavelength to energy, the same principles apply as before:
Frequency: ν Wavelength: λ Energy: E Speed of light: C (3.00e8) Planck's Constant: h (6.626e-34)
ν -> λ λ = C/ν
λ -> ν ν = C/λ
For either of these equations, wavelength must be converted to meters or nanometers, depending on the equation.
For ν -> λ, after doing the equation, convert the wavelength into nanometers by dividing by 1e-9.
For converting λ -> ν, convert the wavelength into meters by multiplying by 1e-9.
For energy: E = hν = hc/λ
Properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing Atomic mass.
The properties of elements are a periodic function of their atomic masses. Mendeleev found that when elements are arranged in the order of increasing atomic mass ,the elements with similar properties occur at regular intervals. Mendeleev's periodic table means that if elements are arranged in the order of increasing atomic masses then the properties of elements are repeated after regular intervals or period. He arranged 63 elements in the order of increasing atomic masses in horizontal row but in such a way that elements having similar properties came directly under one another in the same vertical columns or groups.
To learn more about Mendeleev's Periodic table please visit:
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Answer:
false
Explanation:
The atom model has changed over time because of the discovery of subatomic particles
It would have 98 neutrons.
Explanation:
The formula for finding neutrons when given the atomic number and the mass is to do (mass - atomic number.) In this case, the mass is 156 and the atomic number is 58. So we subtract 156 - 58, which gives us 98. Therefore, it would have 98 neutrons.
Lithium forms a +1 ion because it loses one electron, making the ratio of electrons:protons unbalanced by losing one electron. the ratio is now 2e:3p.
Oxygen forms a -2 ion because of a different reason. It gains 2 electrons rather than losing them.
