Exploring Electron Configuration Concepts

The video tutorial uses a creative narrative involving Dorothy, the Cowardly Lion, and the Tin Man to explain electron configuration. It covers the basics of atomic structure, including electrons, nucleus, and energy levels. The periodic table is discussed in terms of rows, columns, and valence electrons. The tutorial explains the s, p, d, and f blocks and their relation to electron configuration. An analogy of electron configuration as an address is used to simplify understanding. The video concludes with practice examples and a summary of key points.

What is the primary role of electrons in atoms?

• They define the atom's volume.

• They are responsible for the bonding activity of atoms.

• They determine the atom's mass.

• They are found in the nucleus.

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Where are electrons found in an atom?

• In the nucleus with protons and neutrons.

• In energy levels or distances from the nucleus.

• Randomly scattered around the atom.

• Only in the outermost shell.

What do the rows in the periodic table represent?

• The number of valence electrons.

• The energy levels of electrons.

• The number of protons.

• The number of neutrons.

Which block in the periodic table can hold up to 6 electrons?

• d-block

• s-block

• f-block

• p-block

Which element is an exception and belongs to the s-block despite its position?

• Lithium

• Hydrogen

• Beryllium

• Helium

What do orbitals represent in electron configuration?

• The mass of the electron.

• The speed of the electron.

• The charge of the electron.

• The shape of the electron cloud.

In the electron configuration 1s2 2s2 2p2, what does the '2p2' indicate?

• 2 electrons in the second energy level, p orbital.

• 2 electrons in the first energy level, p orbital.

• 2 neutrons in the second energy level, p orbital.

• 2 protons in the second energy level, p orbital.

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What is the electron configuration for hydrogen?

• 1s2

• 1s1

• 2s1

• 2p1

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How many valence electrons does lithium have?

• 4

• 1

• 2

• 3

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What is the electron configuration for boron?

• 1s2 2s2 2p1

• 1s2 2s2 2p2

• 1s2 2s2 2p3

• 1s2 2s2 2p4

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