Question

Выпишите элементы второй А группы Выпишите элементы третьего периода

Answer 1

1. Be; Mg; Ca; Sr; Ba; Ra.
2. Na; Mg; Al; Si; P; S; Cl; Ar

Answer 2

Вторая А группа:
Be, Mg, Ca, Sr, Ba, Ra
Третий период:
Na, Mg, Al, Si, P, S, Cl, Ar

Answer 3

Elements of Group 2

The elements of Group 2 in the periodic table are known as the alkaline earth metals. They include beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

Elements of the Third Period

The third period of the periodic table consists of the following elements: sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar).

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