Question

read the passage and answer the next two questions. during a classroom experiment, a burning magnesium ribbon was dropped into a glass test tube filled with oxygen. a bright white flame was produced. a white powdery substance formed at the end of the reaction. which other element is likely to show a similar chemical reaction with oxygen as shown by magnesium, and to which group does it belong? o na, it belongs to group 1 o c it belongs to group 1 o k it belongs to group 2 o ca, it belongs to group 2

Explanation:

Elements in the same group of the periodic table have similar chemical properties. Magnesium (Mg) is in Group 2. Calcium (Ca) is also in Group 2 and likely to have a similar reaction with oxygen as magnesium due to the same number of valence - electrons. Sodium (Na) and potassium (K) are in Group 1, and carbon (C) is in Group 14.

Answer:

Ca, it belongs to Group 2