Which statements correctly classify group 2? Select all that apply.
Its elements are alkaline-earth metals.✓Правильный ответ
Its elements are the alkali-metal family.
It is the column immediately after group 1.✓Правильный ответ
It is the halogen family.
It is the transition-metal family.
Объяснение
Group 2 is the alkaline-earth-metal family and sits directly after group 1 in standard numbering. The other family labels belong to different parts of the table and cannot be substituted for group 2.