Period Table Test Chem Rev

How are elements arranged in the periodic table? what does it increase in?

atomic number

What are the rows referred to as in the periodic table?

Periods

What are the columns referred to as in the periodic table?

Groups

What information does the atomic number provide about an element?

Number of protons in the nucleus

What information does the mass number provide about an element?

Number of protons and neutrons in the nucleus

Name the element which has 26 electrons, 29 neutrons, and 26 protons.

Iron

Name the element which has 23 protons.

Vanadium

Name the element which has 0 neutrons.

Hydrogen

If you know only the number of protons, can you always determine what the element is? (YES / NO)

YES

If you know only the number of neutrons, can you always determine what the element is? (YES / NO)

NO

If you know only the number of electrons in a neutral atom, can you always determine what the element is? (YES / NO)

YES

If you know only the number of electrons (not necessarily neutral), can you always determine what the element is? (YES / NO)

NO

Name the element found in Group 2, Period 3.

Magnesium

Name the element found in Group 17, Period 4.

Bromine

Name the element found in Group 14, Period 2.

Carbon

Using the periodic table, what are Group 1 elements referred to as?

Alkali metals

Using the periodic table, what are Group 2 elements referred to as?

Alkali earth metals

Using the periodic table, what are Group 17 elements referred to as?

Halogens

Using the periodic table, what are Group 18 elements referred to as?

Noble gases

Using the periodic table, what elements can be found in the d-block?

Transition metals

List 2 properties of the elements in Group 18 (Group 8).

• Unreactive- Gas

Write the electron configuration for Carbon.

2, 4

Write the electron configuration for Potassium.

2, 8, 8, 1

Write the electron configuration for Phosphorus.

2, 8, 5

How many electrons can the 1st shell hold?

2 electrons

How many electrons can the 2nd shell hold?

8 electrons

How many electrons can the 3rd shell hold?

18 electrons

How many electrons can the 4th shell hold?

32 electrons

What is the rule for the maximum number of electrons each shell can hold?

2n^2

Name the element with the electron configuration 2, 5.

Nitrogen

Name the element with the electron configuration 2, 8, 8.

Argon

If an element has 2 electrons in its outer shell, is it a metal or non-metal?

Metal

If an element has 6 electrons in its outer shell, is it a metal or non-metal?

Non-metal

What is the valency of an element?

Number of electrons in the outer shell of the atom

How can you use the periodic table to determine the valency of an element?

The group number (I, II, III, IV, V, VI, VII, VIII or 1, 2, 3, 14, 15, 16, 17, 18) refers to the valency of an element (number of electrons in the outer shell).

Write the valency of Magnesium.

2

Write the valency of Chlorine.

7

Write the valency of Oxygen.

6

Complete the following table: Maximum number of electrons for s-subshell.

2

Complete the following table: Maximum number of electrons for p-subshell.

6

Complete the following table: Maximum number of electrons for d-subshell.

10

Complete the following table: Maximum number of electrons for f-subshell.

14

Write the subshell electron configuration for Beryllium.

1s^2 2s^2

Write the subshell electron configuration for Neon.

1s^2 2s^2 2p^6

Write the subshell electron configuration for Silicon.

1s^2 2s^2 2p^6 3s^2 3p^2

Write the subshell electron configuration for Scandium.

1s^2 2s^2 2p^6 3s^2 3p^6 3d^1 4s^2

Write the subshell electron configuration for Nickel.

1s^2 2s^2 2p^6 3s^2 3p^6 3d^8 4s^2

Compare the reactivity of Group I and Group II metals.

Group I metals are more reactive than Group II metals, as it is easier to remove one electron from the valence shell than 2 electrons.

Describe the reactivity of metals in Group I and II as you go down the group.

The reactivity increases as you move down Group I and II metals, as there are more shells so the electrons are less strongly attracted to the nucleus; therefore the outer shell electrons are more easily removed.

Explain why Group 18 is referred to as noble gases.

Atoms have a full valence (outer) shell, therefore do not require to lose or gain any electrons.

Explain why Helium is placed in Group 18 and not Group 2.

Helium only has 1 shell which is full (2 electrons), therefore it is unreactive and is a gas, similar to other noble gases.

Describe the metallic character of the elements as you move across the period from left to right.

Metallic character decreases as you move across the period from left to right, transitioning from metals to metalloids and then to non-metals.

State the characteristic of an oxide formed by a metal.

Basic

State the characteristic of an oxide formed by a non-metal.

Acidic

Is Calcium an alkaline earth metal? (TRUE / FALSE)

TRUE

Are there 18 groups in the periodic table? (TRUE / FALSE)

TRUE

Are there 8 elements in Period 1 of the periodic table? (TRUE / FALSE)

FALSE

Do all members of Group 1 of the periodic table have one valence electron? (TRUE / FALSE)

TRUE

Do all members of Group 18 of the periodic table have eight valence electrons? (TRUE / FALSE)

TRUE

Is the modern periodic table arranged according to atomic number? (TRUE / FALSE)

TRUE

Is the electron configuration of Neon 2,8? (TRUE / FALSE)

TRUE

Is Silver more reactive than Mercury? (TRUE / FALSE)

FALSE