Q: A photon of green light has a wavelength of 520 nm. What is the energy of this photon? (Use $$h = 6.626 \times 10$$^{-34}$$ \ \mathrm{Js}$$ and $$c = 3.00 \times 10^8$ \ \mathrm{m/s})$$

$$3.82 \times 10$$^{-19}$$ \ \mathrm{J}$$

Question 1

Which region of the electromagnetic spectrum has the highest energy per photon?

Accepted Answer

Gamma rays

Question 2

A photon of green light has a wavelength of 520 nm. What is the energy of this photon? (Use $$h = 6.626 	imes 10$$^{-34}$$ \ \mathrm{Js}$$ and $$c = 3.00 	imes 10^8$ \ \mathrm{m/s})$$

Accepted Answer

$$3.82 	imes 10$$^{-19}$$ \ \mathrm{J}$$

Question 3

Which quantum number determines the shape of an atomic orbital?

Accepted Answer

Angular momentum quantum number ($$l)$$

Question 4

What is the maximum number of electrons that can occupy the $$d$$ orbitals in a single energy level?

Accepted Answer

10

Question 5

Which of the following electron configurations represents a violation of the Pauli Exclusion Principle?

Accepted Answer

$$1s^2$$\ $$2s^2$$\ $$2p^6$$\ $$3s^2$$\ $$3p^6$$\ $$4s^2$$\ $$3d^2$$\ $$4p^7$$

Question 6

Which element has the highest electronegativity?

Accepted Answer

Fluorine

Question 7

Which of the following ions is largest in size?

Accepted Answer

$$F^-$$

Question 8

What is the noble gas electron configuration for sulfur (S)?

Accepted Answer

$$[Ne]\ 3s^2$\ 3p^4$

Question 9

Which of the following molecules has a trigonal pyramidal molecular geometry?

Accepted Answer

$$NH_3$$

Question 10

Which type of bond is the strongest and shortest?

Accepted Answer

Triple bond

Question 11

What is the hybridization of the central atom in $$CH_4$$?

Accepted Answer

$$sp^3$$

Question 12

Which of the following molecules violates the octet rule?

Accepted Answer

$$SF_6$$

Question 13

A molecule has 4 electron dense areas and 2 lone pairs on the central atom. What is its molecular geometry?

Accepted Answer

Bent

Question 14

Which of the following best describes the bonding in metallic solids?

Accepted Answer

Sea of delocalized electrons

Question 15

What is the formal charge on nitrogen in $$NH_4$$^+$$?

Accepted Answer

+1

Question 16

Which of the following statements about sigma ($$\sigma) $$and pi ($$\pi) $$bonds is correct?

Accepted Answer

A triple bond consists of one sigma and two pi bonds

Question 17

Which quantum numbers are possible for an electron in a 3d orbital?

Accepted Answer

$$n=3,\ l=2,\ m_l=-2, -1, 0, 1, 2$$

Question 18

Which of the following best explains why $$O_2 is $$paramagnetic?

Accepted Answer

It has unpaired electrons in its molecular orbitals

Question 19

Which of the following molecules has a bond angle closest to $$109.5^\circ$$?

Accepted Answer

$$NH_3$$

Question 20

Which of the following best describes the trend in atomic radius across a period from left to right?

Accepted Answer

Atomic radius decreases

Exam 4 Review: Quantum Mechanics, Electron Configuration, and Chemical Bonding

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