Properties and Characteristics of Elements

The video tutorial explains how to classify elements using the periodic table. It covers the properties and classification of Boron, Mercury, Phosphorus, and Bromine, highlighting their periods, atomic numbers, and whether they are metals, non-metals, or metalloids. The tutorial also discusses the concept of diatomic elements and family names or numbers on the periodic table.

Which element is a metalloid in the second period?

• Carbon

• Boron

• Nitrogen

• Oxygen

What is the atomic number of Boron?

• 3

• 5

• 7

• 9

Which element is a liquid metal in period six?

• Bromine

• Mercury

• Lead

• Gallium

What is the atomic mass of Mercury?

• 204.38

• 195.08

• 207.2

• 200.59

Phosphorus is classified as which type of element?

• Metal

• Non-metal

• Noble gas

• Metalloid

What is the atomic number of Phosphorus?

• 15

• 18

• 16

• 17

Which family does Bromine belong to?

• Alkaline earth metals

• Noble gases

• Halogens

• Alkali metals

What is the state of Bromine at room temperature?

• Solid

• Gas

• Plasma

• Liquid

Which of the following is a property of halogens?

• They are all metals

• They are all gases

• They are diatomic

• They are all liquids

What is the atomic mass of Bromine?

• 79.9

• 85.47

• 74.92

• 78.96