Metals and Non-metals
Properties and characteristics of metals including alkali metals, transition metals, and metal compounds
Questions
Cesium is the most reactive alkali metal because
- its incomplete shell is nearest to the nucleus
- it has a single electron in its valence shell
- it is the heaviest alkali metal
- its outermost electron is more loosely bound than the outermost electron of the other alkali metals
Which of the following statements is not true about alkali metals?
- They have one electron in their valence shells.
- They have high melting points.
- They are generally soft metals.
- They have low densities.
Duralumin, magnalium and alnico are some of the alloys of
- copper
- zinc
- iron
- aluminium
Which of the following metal hydroxides is the strongest base?
- NaOH
- Ca(OH)2
- Al(OH)3
- CsOH
Which of the following alkali metal halides has the highest melting point?
- NaCl
- NaBr
- NaF
- NaI
The correct order of solubility of the alkali metal hydroxides is
- LiOH < NaOH < KOH < RbOH < CsOH
- LiOH > NaOH > KOH > RbOH > CsOH
- LiOH > CsOH > RbOH > NaOH > KOH
- None of the above
Which of the following characteristics of transition metals is/are associated with their catalytic activity?
- Variable oxidation states
- Colour of hydrated ions
- High melting points
- All of the above
Compared with metals, non-metals are generally
- better conductors of heat
- better conductors of electricity
- chemically more active
- more electronegative
Which of the following groups of transition metals consists of coinage metals?
- Cu, Ag, Au
- Rh, Ru, Pt
- Ni, Au, Co
- Os, Ir, Ag
Which of the following is not a property of halogens?
- They have a valency of one.
- They form diatomic molecules.
- They are gases.
- They have a tendency to form cations.