Eduqas A-Level Chemistry: C1 (The Language of Chemistry and Structure of Matter) overview quiz quiz

$\text{Al}_2(\text{SO}_4)_3$

$\text{AlSO}_4$

$\text{Al}_2\text{SO}_4$

$\text{Al}_3(\text{SO}_4)_2$

$63.6$

$64.0$

$64.4$

$65.0$

The ions that have the largest mass-to-charge ratio

The ions with the smallest mass-to-charge ratio

The ions that carry the highest charge of all

The neutral atoms that were never ionised

$[\text{Ar}]3d^4 4s^2$

$[\text{Ar}]3d^6 4s^2$

$[\text{Ar}]3d^6$

$[\text{Ar}]3d^5 4s^1$

$\text{H}_2\text{O}$

$\text{NH}_3$

$\text{HCl}$

$\text{CO}_2$

Linear and fully symmetrical, with a bond angle of $180^\circ$

Bent (V-shaped), $104.5^\circ$

Trigonal planar and flat, with a bond angle of $120^\circ$

Trigonal pyramidal, with a bond angle of about $107^\circ$

$0.0300\ \text{mol dm}^{-3}$

$0.120\ \text{mol dm}^{-3}$

$0.0600\ \text{mol dm}^{-3}$

$0.240\ \text{mol dm}^{-3}$

$\text{CHO}$

$\text{C}_2\text{H}_4\text{O}_2$

$\text{CH}_4\text{O}$

$\text{CH}_2\text{O}$

Silicon is giant covalent, needing many covalent bonds broken, while phosphorus is simple molecular

Silicon has much stronger metallic bonding with many more delocalised electrons than phosphorus has

Phosphorus has a noticeably smaller nuclear charge, so its atoms attract one another far less strongly

Silicon molecules are held together by strong hydrogen bonds between the silicon atoms

Sulfur has a smaller nuclear charge than phosphorus, so it holds its outer electrons much less tightly than phosphorus does

Sulfur has a paired electron in a 3p orbital, and the repulsion makes one easier to remove

Sulfur's outermost electron sits in a higher 4s sub-shell, so it is far from the nucleus

Sulfur has much more shielding because it has an extra full inner electron shell