Medium periodic table quiz: ions and bonding

Q: What does the medium ions quiz test?

Twenty questions on ionization-energy dips, oxide acid–base character, lattice energy, and polar bonds. Four choices each.

Q: Can I print the medium ions quiz?

Yes. Print or download a blank paper from this page. After you submit, a marked paper is available.

Q: Where are my answers stored?

Only in this browser, under a ptw.quiz.ions key. Incomplete attempts wipe when you leave. Nothing is sent to a server.

Question 1

Beryllium’s first ionization energy is higher than boron's mainly because:

Accepted Answer

Be has a filled 2s² subshell; B’s extra electron is in 2p

Answer

boron has more protons, so its 2p electron is held tighter

Answer

boron is a metal and beryllium is not

Answer

the two first-ionization energies are equal

Question 2

Nitrogen’s first ionization energy is higher than oxygen’s mainly because:

Accepted Answer

N is 2p³ (half-filled); O is 2p⁴, so one 2p orbital is paired

Answer

oxygen has fewer protons

Answer

oxygen has a noble-gas configuration

Answer

nitrogen is larger than oxygen

Question 3

Metallic character generally increases:

Accepted Answer

down and to the left

Answer

up and to the right

Answer

only across a period

Answer

only at the noble gases

Question 4

Which oxide is acidic?

Accepted Answer

SO₃

Answer

Na₂O

Answer

MgO

Answer

CaO

Question 5

Which oxide is basic?

Accepted Answer

Na₂O

Answer

CO₂

Answer

SO₂

Answer

NO₂

Question 6

The oxidation number of sulfur in SO₄²⁻ is:

Accepted Answer

+6

Answer

+2

Answer

+4

Answer

−2

Question 7

Which ion is isoelectronic with Ar?

Accepted Answer

Cl⁻

Answer

F⁻

Answer

Na⁺

Answer

O²⁻

Question 8

Ionic bonding is typical between:

Accepted Answer

a metal and a nonmetal

Answer

two nonmetals

Answer

two noble gases

Answer

two identical nonmetals

Question 9

Which solid is a covalent network?

Accepted Answer

diamond

Answer

NaCl

Answer

ice

Answer

iron

Question 10

Mg²⁺ is smaller than Na⁺ mainly because:

Accepted Answer

they have the same electron count, but Mg has one more proton

Answer

magnesium has fewer protons

Answer

Na⁺ has an extra electron shell

Answer

neutron count sets cation size

Question 11

The ionic compound of aluminum and oxygen is:

Accepted Answer

Al₂O₃

Answer

AlO

Answer

AlO₂

Answer

Al₃O₂

Question 12

Which molecule is paramagnetic?

Accepted Answer

O₂

Answer

N₂

Answer

F₂

Answer

Ne

Question 13

Compared with a Cl atom, Cl⁻ is:

Accepted Answer

larger

Answer

smaller

Answer

the same size

Answer

a different element

Question 14

Which pair has the largest lattice energy?

Accepted Answer

MgO

Answer

CsI

Answer

NaCl

Answer

KBr

Question 15

Which bond is the most polar?

Accepted Answer

H–F

Answer

H–H

Answer

C–C

Answer

Cl–Cl

Question 16

Phosphorus has how many valence electrons?

Accepted Answer

5

Answer

3

Answer

8

Answer

15

Question 17

Gas-phase Cu⁺ is:

Accepted Answer

[Ar] 3d¹⁰

Answer

[Ar] 3d⁹ 4s¹

Answer

[Ar] 3d¹⁰ 4s¹

Answer

[Ar] 3d⁹

Question 18

Which oxide is amphoteric?

Accepted Answer

Al₂O₃

Answer

Na₂O

Answer

SO₃

Answer

CO₂

Question 19

Effective nuclear charge is best described as:

Accepted Answer

Z minus the shielding of inner electrons

Answer

the atomic number Z, with no correction

Answer

the neutron count

Answer

the mass number A

Question 20

Across a period, first ionization energy generally:

Accepted Answer

rises

Answer

falls

Answer

stays flat

Answer

applies only to metals

Medium periodic table quiz: ions and bonding

Common questions

What does the medium ions quiz test?

Can I print the medium ions quiz?

Where are my answers stored?

Medium periodic table quiz: ions and bonding

Common questions

What does the medium ions quiz test?

Can I print the medium ions quiz?

Where are my answers stored?