Chapter 30- Periodic Table

Question 1

How many main groups are there in the periodic table and why are they grouped like that?

Answer 1

There are 8 main groups.
They are put together because they have similar chemical properties and have the same number of electrons in their outer orbit or shell.

Question 2

How are the groups of the periodic table numbered?

Answer 2

They are numbered using Roman numerals.

Question 3

What are the periods of the periodic table?

Answer 3

They are the horizontal rows of elements in the periodic table.

Question 4

Name 2 things about the periods.

Answer 4

1/ There are 7 periods.

2/ They are usually labelled n=1, n=2 etc…

Question 5

What are transition metals?

Answer 5

The block of elements in the centre of the periodic table that contain many common metals.

Question 6

What is the periodic table?

Answer 6

It is an arrangement of elements in order of increasing atomic number.

Question 7

What is another word for electron arrangement?

Answer 7

Electron configuration.

Question 8

How do you represent how many electrons are in each orbit of the given atom?

Answer 8

You write the chemical name for the atom and then follow it by the number of electrons in the first orbit, the second, etc…
Ex. c=2,4

Question 9

What are isotopes?

Answer 9

They are atoms of the same element that have different numbers of neutrons.