What is the frequency of light having a wavelength of 413 nm?

The required frequency = 7.263X10^14 Hz

Explanation:

We know,

Velocity of light in vacuum, v= 3X10^8 m/s

Given,

Wave length,λ= 413 nm= 4.13X10^-7 m

Now,

frequency, f= v/λ

                    = 7.263X10^14 Hz

∴ The required frequency = 7.263X10^14 Hz

- 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

practical process described pest part of scientific investigation.

because practical knowledge is powerful then therotical knowledge.