Question 1

Which of the following ions has the largest radius?

Accepted Answer

K$$^+$$

Question 2

Which element has the highest first ionization energy?

Accepted Answer

Cl

Question 3

Place the following elements in order of increasing atomic radius: Xe, Rb, Br.

Accepted Answer

Xe \u003c Br \u003c Rb

Question 4

Which of the following elements has the most negative electron affinity?

Accepted Answer

Cl

Question 5

Which of the following statements about effective nuclear charge ($$Z_{	ext{eff}}) is $$correct?

Accepted Answer

Effective nuclear charge increases as we move to the right across a row in the periodic table.

Question 6

Which element is diamagnetic?

Accepted Answer

F

Question 7

What is the molecular geometry of ICl$$_3 ($$iodine trichloride)?

Accepted Answer

T-shaped

Question 8

What are the bond angles in SF$$_6$$?

Accepted Answer

$$90^\circ$$, $$180^\circ$$

Question 9

On the basis of formal charge, which of the following is the best structure for OCN$$^-$$?

Accepted Answer

Structure B: $$\mathrm{^-O-C\equiv N}$$

Question 10

Which of the following molecules has the smallest bond angle?

Accepted Answer

PH$$_3$$

Question 11

Which of the following molecules contains polar covalent bonds but is itself nonpolar?

Accepted Answer

SiCl$$_4$$

Question 12

Which of the following molecules/ions has a central atom with an expanded octet?

Accepted Answer

SCl$$_4$$

Question 13

What is the hybridization of the central atom in PH$$_3$$?

Accepted Answer

$$sp^3$$

Question 14

How many sigma and pi bonds are present in benzene (C$$_6H$_6$$)?

Accepted Answer

12 sigma, 3 pi

Question 15

Give the electron geometry (eg), molecular geometry (mg), and hybridization for H$$_2O.$$

Accepted Answer

eg = tetrahedral, mg = bent, $$sp^3$$

Question 16

Give the electron geometry (eg), molecular geometry (mg), and hybridization for XeF$$_4.$$

Accepted Answer

eg = octahedral, mg = square planar, $$sp^3d^2$

Question 17

Which of the following pairs of atoms form polar covalent bonds?

Accepted Answer

N and Cl

Question 18

How many resonance structures that obey the octet rule can be drawn for SO$$_2$$?

Accepted Answer

3

Question 19

Which of the following is the correct ground state electron configuration for Zn$$^{2+}$$?

Accepted Answer

[Ar]3d$$^{10}$$

Question 20

Which of the following is the correct ground state electron configuration for Rb?

Accepted Answer

[Kr]5s$$^1$$

General Chemistry Study Guide: Atomic Structure, Periodic Trends, Chemical Bonding, and Molecular Geometry

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