AP Chemistry Periodic Trends

Multiple Choice

Find the next 3 numbers in the pattern: 6, 12, 18, 24, ...

• 36, 42, 48

• 30, 36, 42

• 48, 96, 192

• 18, 12, 6

Multiple Choice

Find the next 3 numbers in the pattern: 2, 6, 10, 14, ...

• 22, 30, 38

• 19, 23, 27

• 22, 26, 30

• 18, 22, 26

Multiple Choice

Find the next 3 numbers in the pattern: 4, 20, 100, 500, ...

• 2500, 12500, 62500

• 2000, 10000, 50000

• 505, 510, 515

• 25000, 125000, 625000

Multiple Choice

15 29 56 108 208 ...

• 386

• 400

• 416

• 438

Multiple Choice

What is the charge on a chloride ion?

• Cl⁺

• Cl²⁺

• Cl^-

• Cl^2-

Multiple Choice

When an atom loses a valence electron, it becomes a(n) _____________ ion.

• positive

• negative

• neutral

Multiple Choice

What is the charge of a sodium ion?

• +2

• +1

• -1

• -2

Multiple Choice

If an element has 3 valence electrons, what charge will likely form on its ion ?

• +3
• +5
• -3
• -5

Open Ended

Describe the trend in atomic radius as you go across a period and down a group.

Explain your trend in terms of electrons, shielding, nuclear charge.

Multiple Choice

Which of the following equations represents the first ionization energy of an element X?

• X(g) + $$e^-$$   $$\rightarrow$$    $$X^+$$  (g)

• $$X^+\left(g\right)$$  + $$e^-$$   $$\rightarrow$$  X(g)

• X(g) $$\rightarrow$$   $$X^+\left(g\right)$$  + $$e^-$$  

Multiple Choice

Which element in the pair of adjacent elements, Mg and Na,has a higher first ionization energy?

• Na

• Mg

Multiple Choice

Which of the following is the correct descending order for ionisation energy?

• N, O, S, P

• N, O, P, S

• O, N, P, S

• P, S, N, O

Multiple Choice

Which of the following factors does not directly influence the ionization energy of an atom?

• Atomic radii

• Nuclear charge

• Shielding effect

• Neutrons