The Periodic Table

Question 1

What would happen if bromine was added to a solution of potassium iodide?

Accepted Answer

Iodine is displaced and potassium bromide forms

Question 2

Which Scientist developed the "Law of Octaves" in relation to the elements?

Accepted Answer

Newlands

Question 3

The most reactive element in group 7 is...

Accepted Answer

Fluorine

Question 4

What do the group numbers in the periodic table tell us?

Accepted Answer

How many electrons are in the outer shell

Question 5

What ions do group 7 elements form?

Accepted Answer

-1

Question 6

How does the reactivity of group 1 metals change as you go down the group?

Accepted Answer

They get more reactive

Question 7

How do the melting points of group 1 metals change as you go down the group?

Accepted Answer

They get lower

Question 8

What is the common name for group 1 elements?

Accepted Answer

alkali metals

Question 9

What was different about how Mendeleev arranged the elements in his periodic table?

Accepted Answer

He left gaps for undiscovered elements

Question 10

Which of these statements does not explain why potassium is more reactive than lithium?

Accepted Answer

Larger atoms gain electrons more easily

Question 11

Why do halogens get less reactive as you go down the group?

Accepted Answer

There are more electron shells so shielding is increased

Question 12

Which of these properties is not common in transition elements?

Accepted Answer

Very reactive

Question 13

How do the boiling points of the noble gases change as you go down the group?

Accepted Answer

Increases

Questions 13