A+...metallics.
silver
Because
These elements exist as compounds.
Covalent bond can exist in any type of compounds.
no
All elements and all compounds do not exist as molecules. As examples, noble gases exist as individulal atoms and ionic compounds form lattices.
Yes, calcium exist also in organic compounds.
due to strong electrostatic forces ionic compounds usually exist as solids at room temperature.
Organic compounds exist as discrete molecules with much weaker inter molecular forces than those seen in ionic compounds?
Covalent.. A+
A+...metallics.
No. Many compounds are liquids (water, hexane) and gasses (carbon dioxide, ammonia) at room temperature. Many compounds are solid at room temperature and can, but often do not exist in the form of a powder.
To the extent the question makes any sense (i.e. very little): no.Crystals of both ionic and covalent compounds exist.
chloride does not exist on its own, only in chemical compounds. However, chlorINE does exist.
Many ionic compounds exist as crystals but covalent compounds as molecules (there are exceptions as diamond though). Ionic compounds would be good electrical conductors unlike molecular compounds.
solidliquidgasplasma (compounds can rarely exist in this state, as they break down into their ionized elements)