Black, brown and grey.
Pink is not a color found in the spectrum, as it is a combination of red and white light. Brown is also not found in the spectrum, as it is a combination of multiple colors and does not have a distinct wavelength.
A spectrum can take many forms. It usually means a range or group of things. For example... White light is split into the spectrum of colours by a prism. Radio waves form a small part of the electro-magnetic spectrum.
The collective nouns for colours (or colors) are:a palette of colorsa rainbow of coloursa spectrum of colors
The characteristic IR spectrum stretches of the functional group present in the compound can be identified by analyzing the peaks in the infrared spectrum. Each functional group has specific peaks that correspond to the vibrations of the bonds within that group. By comparing the peaks in the spectrum to known values for different functional groups, the presence of a particular functional group can be determined.
not as colorful as my brain
Red, green, black and yellow are part of a group of colours known collectively as Pan-African colours. Those particular four colours can be found on the flags of Ghana, Guinea-Bissau, and São Tomé and Príncipe. You can find more information in the Sources and Related links, below.
A group of colours blending into each other.
Radicals are on the extreme left of the political spectrum.
I will assume the anniversary is for a group or city. Most such will have colours associated with them. As there is no specific colour used for the 130th , some combination of the colours used by the group would be appropriate.
Nylon is a manufactured fiber containing amides. Because it is not an element, it is cannot be found on the periodic table.
Almandine
Sodium, being a reactive element In group 1, cannot be found as element in nature. One of its common compounds is rock salt.