4NA Sci (Chem) Periodic Table Trends

How are elements arranged in the Periodic Table?

• in order of their mass

• in order of their proton numbers

• in order of the number of electron shells

• in order of their boiling points

Metals are found on the ​ (a)   side of the Periodic Table, while non-metals are found on the ​ (b)   side of the Periodic Table. Hence metallic character ​ (c)   as we go from left to right across the Periodic Table.

• left
• right
• decreases
• increases
• stays the same
• centre

An element exists as a silvery-grey solid that conducts electricity at room temperature. Which statement about this element is correct?

• It is found on the left side of the Periodic Table and gains electrons when reacting.

• It is found on the right side of the Periodic Table and gains electrons when reacting.

• It is found on the left side of the Periodic Table and loses electrons when reacting.

• It is found on the right side of the Periodic Table and loses electrons when reacting.

Tags

NGSS.MS-PS1-5

Elements in the same group have the same number of _______ electrons.

Sodium and chlorine are in the same Period of the Periodic Table.

What explains why they are in the same Period?

• They have the same number of valence electrons.

• They have the same number of electron shells.

• They have the same chemical properties.

• They have the same physical properties.

Match the following electronic configurations to the Group and Period the elements are in!

• Group 0, Period 2

• 2

• Group II, Period 3

• 2,8,1

• Group IV, Period 2

• 2,8

• Group 0, Period 1

• 2,4

• Group I, Period 3

• 2,8,2

An element X has electronic configuration 2,2.

Which electronic configuration belongs to another element with chemical properties most similar to X?

• 2,8,2

• 2

• 2,8

• 2,1

The ion of element X has a 2+ charge.

X is from Period 3.

What is X?

• calcium

• magnesium

• sulfur

• selenium

The ion of element Y has a 1- charge.

Y is from Period 3.

What is Y?

• sodium

• potassium

• chlorine

• bromine

The most unreactive elements are found in Group _.

• I

• II

• 0

• VII