Position of Hydrogen in the periodic table

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Across
  1. 4. -"Property resembling alkali metals in forming ionic compounds."
  2. 5. -"Top of group 1, but not an alkali metal."
  3. 7. -"Electronegativity close to this element, key in hydrogen bonding."
  4. 8. -"Acts as this agent in reactions, like halogens."
  5. 9. -"Ionization energy higher than this group."
Down
  1. 1. -"Forms this type of hydride, like groups 1 and 2."
  2. 2. -"Electronic configuration like this group when forming diatomic molecules."
  3. 3. -"Exists as this type of molecule, like halogens."
  4. 6. -"Forms these bonds with electronegative elements."