Valence Electrons and Bromine Properties

The video tutorial explains how to determine the number of valence electrons for a bromine atom. It presents two methods: using the periodic table and writing the electron configuration. Bromine, located in group 17 of the periodic table, has 7 valence electrons. Alternatively, by writing the electron configuration, it is shown that the valence electrons are in the fourth energy level, confirming the same number. The video concludes by summarizing these methods.

What are the two methods mentioned for finding the number of valence electrons in bromine?

• Using isotopes and electron affinity

• Using chemical reactions and atomic mass

• Using the periodic table and electron configuration

• Using molecular structure and atomic number

In which group of the periodic table is bromine found?

• Group 3

• Group 12

• Group 17

• Group 1

How many valence electrons does bromine have according to the periodic table?

• 8

• 7

• 5

• 6

What is the atomic number of bromine?

• 80

• 53

• 35

• 17

In the electron configuration method, which energy level contains the valence electrons for bromine?

• Fourth energy level

• Third energy level

• Second energy level

• First energy level

How many valence electrons are found in the highest energy level of bromine?

• 7

• 5

• 2

• 9

What is the significance of the outer shell in determining valence electrons?

• It contains all the electrons

• It holds the valence electrons

• It determines the atomic mass

• It is irrelevant to valence electrons