Structure 3. Classification of matter – Page 3

M25-CHEM-HL-TZ1-P1A-Q14

Germanium has several stable oxidation states. Which row shows these species in order of increasing radius?

Which statement explains the trend in first ionisation energy from sodium, Na, to chlorine, Cl?

Another ester was made following a similar reaction sequence.

Recrystallization is a technique frequently used to purify solids.

The graph shows the variation of the first ionization energy with atomic radius for periods 2, 3 and 4 of

What is the IUPAC name of this compound?

Which statements best explain why copper(II) ions, \( Cu^{2+} \) (aq), are blue in aqueous solution? I. Copper(II) ions absorb

Which compound has the highest boiling point?

Which compounds could exist as stereoisomers? I. \( CH_{2}CCIBr \) II. \( CHBrICI \) III. \( CHBrCClBr \)

Which element is a p-block metal?