Question

match the element name with its correct symbol.
barium
bismuth

1. b

boron

1. be

berkelium

1. ba

beryllium

1. bi

bromine

1. bh

bohrium

1. br
2. bk

question 3 (0.25 points)
which of the following has the shortest wavelength?
yellow light
cell phones
microwaves
red light

Explanation:

First Matching Problem

Match each element name to its standard 1-2 letter chemical symbol based on IUPAC conventions.

Electromagnetic spectrum wavelength order (longest to shortest): microwaves > cell phone radio waves > red light > yellow light. Yellow light has a shorter wavelength than red light, and both are shorter than microwaves/cell phone signals.

Answer:

• barium: 3. Ba
• bismuth: 4. Bi
• boron: 1. B
• berkelium: 7. Bk
• beryllium: 2. Be
• bromine: 6. Br
• bohrium: 5. Bh

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Second Multiple-Choice Problem