Table of Contents
Do all butterflies have 12000 eyes?
Butterflies have two different types of eyes. Both single, and 12000 compound eyes. The single-chambered eyes focus mainly on individual objects. Whereas their 12000 compound eyes are used as their main eyesight.
Why is Hexaaquacopper blue?
If you add an excess of ammonia solution to hexaaquacopper(II) ions in solution, the pale blue (cyan) colour is replaced by a dark inky blue as some of the water molecules in the complex ion are replaced by ammonia. You need that higher energy because ammonia causes more splitting of the d orbitals than water does.
What colour is cu2+?
Examples
| Name | Formula | Color |
|---|---|---|
| Copper(II) | Cu2+ | Blue |
| Copper(II) amine complex | Cu(NH 3) 2+ 4 | Indigo-blue |
| Copper(II) chloride | CuCl 2− 4 | Blue – Green |
| Zinc(II) | Zn2+ | Colorless |
How do you know what color a compound is?
The number of valence electrons which are present in the outermost orbit of a compound decide the colour of light. These electrons absorb a certain portion of visible light spectrum and produce a colour that is complementary to the colour of the light absorbed.
Do spiders have 8 eyes?
Spider eyes for spider lives They usually have eight eyes: two very large front eyes to get a clear, colour image and judge distance, and extra side eyes to detect when something is moving. Here’s a picture of an Australian jumping spider. Some spiders make nets to catch their prey.
Can butterfly see their wings?
Within about 10–12 feet, butterfly eyesight is quite good. The butterflies themselves may even have ultraviolet markings on their wings to help them identify one another and locate potential mates. Flowers, too, display ultraviolet markings that act as traffic signals to incoming pollinators like butterflies.
What ion is yellow?
Fe+3
Ion Color
| ion | color |
|---|---|
| Fe+3 | yellow green |
| K+ | colorless |
| Li+ | colorless |
| Mg | colorless |
Are Group 1 compounds coloured?
The hydrides of Group 1 metals are white crystalline solids which contain the metal ions and hydride ions, H-. They have exactly the same crystal structure as sodium chloride – that’s why they are called saline or salt-like hydrides.
What color is fecl3?
Ferric chloride is an orange to brown-black solid.
What is the Colour of fe2o3?
Brownish Red
Earth Colour Red – 60% Fe2O3
| Colour | Brownish Red |
|---|---|
| Form | Powder |
| Particle Size | 63 Microns (240 Mesh BSS) |
| CAS | 1309-37-1 |
| Chemical Name | Ferric Oxide |
Is Red is a compound or element?
The periodic tableThe periodic table shows 118 elements, including metals (blue), nonmetals (red), and metalloids (green). Hydrogen and helium are by far the most abundant elements in the universe.
Which is the longest wavelength in the visible spectrum?
Visible wavelengths cover a range from approximately 400 to 800 nm. The longest visible wavelength is red and the shortest is violet. Other common colors of the spectrum, in order of decreasing wavelength, may be remembered by the mnemonic: ROY G BIV.
How is the wavelength of a wave represented?
The wavelength of a wave is the distance between two adjacent peaks or troughs of adjacent cycles. It is a characteristic of both traveling waves and standing waves. It is denoted by lambda (λ) and it can be represented in units of distance like mm, cm, meters etc. Wavelength is inversely proportional to frequency.
How does the frequency to wavelength calculator work?
This frequency to wavelength calculator helps you determine the wavelength of a waveform based on the frequency. It assumes that the wave is traveling at the speed of light which is the case for most wireless signals. The entry unit of frequency can be modified, the output wavelength is calculated in meters.
How are complementary colors related in UV spectroscopy?
The remaining light will then assume the complementary color to the wavelength (s) absorbed. This relationship is demonstrated by the color wheel shown on the right. Here, complementary colors are diametrically opposite each other. Thus, absorption of 420-430 nm light renders a substance yellow, and absorption of 500-520 nm light makes it red.