Question

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1. most active nonmetals
2. group ii metals
3. the atomic number is the number of ____.
4. metals tend to form ____ ions.
5. the elements are arranged by atomic ____.
6. the vertical columns are called families, or ____.

Explanation:

1. The most active non - metals are the halogens.
2. Group II metals are alkaline earth metals.
3. The atomic number is the number of protons in an atom.
4. Metals tend to form positive ions by losing electrons.
5. Elements are arranged by atomic number in the periodic table.
6. The vertical columns in the periodic table are called groups or families.

Answer:

1. Halogens
2. Alkaline earth metals
3. Protons
4. Positive
5. Number
6. Groups