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1.

The figure shows the electron arrangement of an atom in its main energy levels. Which option is correct?

element Be (Z = 4), period 2, group 1

element He (Z = 2), period 2, group 1

element Be (Z = 4), period 3, group 1

element Li (Z = 3), period 2, group 1

2.

The figure shows the electron arrangement of an atom in its main energy levels. Which option is correct?

element K (Z = 19), period 4, group 1

element K (Z = 19), period 1, group 4

element K (Z = 19), period 5, group 1

element Ca (Z = 20), period 1, group 4

3.

The figure shows the electron arrangement of an atom in its main energy levels. Which option is correct?

element Ar (Z = 18), period 4, group 18

element Cl (Z = 17), period 4, group 18

element Ar (Z = 18), period 3, group 18

element Cl (Z = 17), period 8, group 3

4.

The figure shows the electron arrangement of an atom in its main energy levels. Which option is correct?

element S (Z = 16), period 6, group 3

element P (Z = 15), period 4, group 6

element Cl (Z = 17), period 4, group 6

element S (Z = 16), period 3, group 16

5.

The figure shows the electron arrangement of an atom in its main energy levels. Which option is correct?

element O (Z = 8), period 2, group 17

element F (Z = 9), period 7, group 2

element F (Z = 9), period 2, group 17

element F (Z = 9), period 3, group 7

Chapter 3 — The Periodic Table and Classification of Elements — Picture questions (exam style)