Ared light source emits light of a certain frequency. a violet light source emits light that has double the frequency of the red light source. how does the wavelength of the red light compare to the violet light.

The wavelength of red light is double the wavelength of violet light.

Let = Frequency of red light source

Let = Frequency of violet light source

Let λR = Wavelength of red light source

Let λV = Wavelength of violet light source

Given: Frequency of violet light is two times (double) the frequency of red light.

Therefore ........................(1)

The relation between speed of light (c), frequency (n) and wavelength (λ) is given by

c = nλ

Frequency is inversely proportional to λ.

The speed of light remains constant for both light sources = c = 3 × 10⁸ m/s²

For red light source: λR  ........................(2)

For violet light source: λV ..................(3)

Equating (2) and (3), we get

λR = λV

From (1)

λR = λV

λR = 2 × λV

Therefore, wavelength of red light is two times the wavelength of violet light.

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms