Find an element from the halogen group and noble gases group and tell how it is used in everyday life.

Explanation:

1. Halogen group

The halogen group is the group number 17 of the periodic table. The elements of this group or family are:

The most widely used of those elements in everyday life are fluor, chlorine, and iodine.

2. Noble gases group.

The noble gases group is the group number 18 of the periodic table.

These elements are the most stables of all the  118 elements.

Therefore, they do not react normally.

The elements of this group or family are:

The most used in everyday life are helium and neon.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

frequency, z, and the collision density, z, in carbon dioxide (co2), r 180 pm at 30 °c and 120 kpa