1. Atom Structure

Question 1

The definition and value of Avagadro’s number.

Answer 1

The number of of particles in one mol of a substance.

6.022 x10²³

Question 2

Value of the speed of light.

Answer 2

C = 2.998 x10⁸ m/s

Question 3

Where C equals the speed of light, give the formula to calculate C with wavelength and frequency.

Answer 3

Question 4

What is the value of Planck’s Constant (h)?

Answer 4

h = 6.63 x10^-34

Question 5

Give Planck’s Equation.

Answer 5

E = h•v = hc/λ

Question 6

Formula to calculate E_n

Answer 6

E_n = - E₁/n²

^{Where <strong>E</strong> is the energy of a given shell}

^{Where <strong>n</strong> is the shell number.}

Question 7

Formula to calculate the distance of an orbital from the nucleus.

Answer 7

r_n = r₁•n²

^{Where n is the shell number}

Question 8

Formula to calculate the De Broglie wavelength of an electron.

Answer 8

Where h is Planck’s Constant

Where p is momentum

Question 9

Pauli’s Exclusion Principle

Answer 9

No two electrons can have the same four quantum numbers in an atom.