CH06 Study Guide

The elements in the modern periodic table are arranged according to increasing ​ (a)   . This arrangement is based on number of​ (b)   in the nucleus of an atom of the element. The modern form of the periodic table results in the ​ (c)   , which states that when elements are arranged according to increasing atomic number, there is a periodic repetition of their chemical and physical ​ (d)   .

• atomic number
• protons
• periodic law
• properties
• elements
• atomic mass
• nine
• eight

Match the following element information to the the labels.

a

b

c

d

e

N

Nitrogen

[He]2s²2p³

7

14.007 g/mol

Match the following

• group

• A column on the periodic table

• representative elements (A group)

• Elements in groups 1, 2, 13 to 18

• metals

• A row on the periodic table

• period

• Elements that are shiny and conduct electricity

• transition elements (B group)

• Elements in group 3 - 12

State whether the following is true or correct the false part with the correct term.

There are two main classifications of elements.

Answer explanation

In this question, we are asked for the main classification of elements: there are three. (1) Metals, (2) nonmetals, and (3) metalloids.

State whether the following is true or correct the false part with the correct term.

More than three-fourths of the elements in the periodic table are nonmetals.

State whether the following is true or correct the false part with the correct term.

Group 1 elements (except for hydrogen) are known as the alkali metals.

State whether the following is true or correct the false part with the correct term.

Group 13 elements are alkaline earth metals.

State whether the following is true or correct the false part with the correct term.

Group 17 elements are highly reactive nonmetals known as halogens.

State whether the following is true or correct the false part with the correct term.

Group 18 elements are very unreactive elements known as transition metals.

State whether the following is true or correct the false part with the correct term.

Metalloids have properties of both metals and inner transition metals.