Question

The energy of colored light increases in the order red, yellow, green, blue, violet.List the metallic elements used in the flame tests in increasing order of the energy of the light emitted

Answer 1

Answer:

Explanation:

Flame test:

The metals ions can be detected through the flame test. Different ions gives different colors when heated on flame. Tom perform the flame test following steps should follow:

1. Dip a wire loop in the solution of compound which is going to be tested.

2. After dipping put the loop of wire on bunsen burner flame.

3. Observe the color of flame.

4. Record the flame color produce by compound

Color produce by metals:

Red = Lithium, zirconium, strontium, mercury, Rubidium (red violet)

Orange-red = calcium

Yellow = sodium, iron (brownish yellow)

Green = green

Blue = cesium. arsenic, copper, tantalum, indium, lead

Violet = potassium (lilac)

Answer 2

The metallic elements used to produce each colored light in a flame test are as follows;

Red: Strontium

Orange: Calcium

Yellow: Sodium

Green: Barium

Blue: Copper

Violet: Potassium

• A flame test is simply qualitative test used in chemistry to detect the presence of specific elements and metal ions, based on each element's specific emission spectrum. This means when the compound is placed in the flame, there will form a characteristic color of flame which depends on the temperature of the flame.

• Now, since we are told that the energy of the colored light increases in ascending order of; Red, Orange, Yellow, Green, Blue, Violet. Then from research, the metallic elements used to produce each color are as follows;

Red: Strontium

Orange: Calcium

Yellow: Sodium

Green: Barium

Blue: Copper

Violet: Potassium

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