Physical Science/Chemistry

It refers to the distance between 2 successive maxima or 2 successive minima.

• wavelength

• amplitude

• speed

• frequency

Which of the following has the shortest wavelength?

• yellow

• red

• blue

• violet

What is the proper order of the EM Spectrum according to decreasing frequency?

• radiowave, microwave, infrared, visible, UV, x-ray, gamma

• gamma, x-ray, UV, visible, infrared, microwave, radiowave

• gamma, x-ray, visible, UV, infrared, microwave, radiowave

• radiowave, microwave, visible, infrared, UV, x-ray, gamma

The packets of energy of light is known as

Which of the following corresponds to the correct maximum number of sublevels p, f, d, and s, respectively?

• 6, 14, 10, 2

• 2, 6, 10, 14

• 14, 10, 6, 2

• 10, 6, 2, 14

How many degenerate orbitals are present in d sublevel?

• 5

• 7

• 3

• 1

Which of the following is TRUE about the Aufbau’s Principle?

• The orbitals are arranged according to increasing energy

• There are only 2 electrons placed in a given orbital

• Each degenerate orbital must be filled in first by a single electron before pairing up

• The electrons in each orbital should be of opposite spins

Answer explanation

A/B – Pauli’s Exclusion

C – Hund’s Rule

What is the group number and period number of Fluorine, respectively (𝐹9)

• IIA, 7

• VA, 2

• VIIA, 2

• IIA, 5

Write the electron configuration of Copper (𝐶𝑢29)

What is the valence electron of Potassium (𝐾19)?

• 3

• 4

• 2

• 1