General chemistry 1

3. _______has the highest metallic character of alkaline earth metals.
7. Substances have only paired electrons are called________.
8. Halogen that is smaller than iodine.
9. Chemical bond occurs by sharing of electrons is called________ bond.
12. Elements in d-block of the periodic table of elements are called ______ metals.
14. The same elements with different number of neutrons are called________.
15. The scientist who suggested the atomic model with energy levels.

1. Elements in the same ______ of the periodic table have similar chemical properties.
2. The shape of xenon difluoride molecule is ______.
4. The elements in group 1A are called ______ metals.
5. The _________ indicates the tendency of an atom to attract electrons towards itself.
6. Element with electron configuration [Ar]4s1 3d10
10. The solubility of an ionic compound is related to its ________energy.
11. The identity of an atom is defined by the number of _______ in the nucleus.
13. The scientist who is famous for discovery of electrons.