• Periodic trends can also be seen in the typical properties of metals and non-metals which are summarised below:

The typical properties of metals and non-metals

• The typically properties of metals and non-metals can be explained by reference to their trends in atomic radius, ionic radius, ionisation energy, electron affinity and electronegativity
• The low?ionisation energies?and low?electronegativities?of metals can account for the ability of their?valence electrons?to move away from the nucleus
  • This is known as 'delocalisation' of the electrons
• These properties increase from left to right as you transition from metal to metalloid to non-metal
• The high?electronegativity?and?electron affinity?of non-metals can be related to their tendency to share electrons and form covalent bonds, either with themselves or other non-metal elements
• The similarities in?electronegativities?of the diagonal band of?metalloids?which divides the metals from the non-metals explains the behaviour of?metalloids

Test yourself on the trends in the periodic table:

Answer:

The correct option is?D

• • Across a period atomic radius decreases, electronegativity and ionisation energy increase and ionic radius increases then decreases