5076 5078 The Periodic Table

How are the elements arranged in the Periodic Table?

• in order of chemical reactivity

• in order of electron shells

• in order of proton number

• in order of relative atomic mass

What determines the group of an element in the Periodic Table?

• the number of completely filled electron shells

• the number of electrons in the shell closest to the nucleus

• the number of electrons in the shell furthest from the nucleus

• the number of protons in the nucleus

An atom of element X has an electronic structure of 2,8,6.

Which element will have properties most similar to X?

• A

• B

• C

• D

Element X exists as diatomic molecules.

In which group of the Periodic Table is X?

• Group 0

• Group I

• Group II

• Group VII

In the outline of the Periodic Table, some elements are shown as numbers.

Which two numbers are metals in the same period?

• 1 and 2

• 1 and 7

• 3 and 5

• 5 and 6

In the Periodic Table, how does the metallic character of the elements vary from left to right across a period?

• It decreases.

• It increases.

• It increases then decreases.

• It stays the same.

Some of the general physical properties of metals are shown.

Which of the properties does sodium have?

• 1 only

• 1 and 2 only

• 1, 2 and 3 only

• All of the above

The table lists the halogens and their appearance.

Astatine would be expected to be a

• brown gas.

• grey solid.

• black solid.

• red liquid.

Four elements have the following electronic configurations.

W: 2,8,1

X: 2,8,2

Y: 2,8,5

Z: 2,8,8

Which statement is correct?

• All four elements are in the same group in the Periodic Table.

• All four elements are in the same period in the Periodic Table.

• W is a metal but X, Y and Z are non-metals.

• X is a metal but W, Y and Z are non-metals.

An element X forms an ion X^2-.

Which group of the Periodic Table is this element found in?

• Group 1

• Group III

• Group VI

• Group VII