Three elements, X , Y and Z , have the physical properties shown in the table. element melting point / °C boiling point / °C density / g cm$^{-3}$ :---: :---: :---: :---: X –7 59 3.12 Y 98 883 0.97 Z 649 1107 1.74 What could be the identities of X , Y and Z ? Options X Y Z --- --- --- --- A Br₂ Al Si B Br₂ Na Mg C I₂ Mg Na D I₂ Si K

Chemistry 9701/11 — October/November 2011

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Topics Chemical Bonding · Group 17 · Hydrocarbons · Hydroxy Compounds · Introduction to Organic Chemistry · Atoms, Molecules and Stoichiometry · +13 more

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Q11MStates of MatterFree sample

Three elements, X, Y and Z, have the physical properties shown in the table.

element	melting point / °C	boiling point / °C	density / g cm $^{-3}$
X	–7	59	3.12
Y	98	883	0.97
Z	649	1107	1.74

What could be the identities of X, Y and Z?

Options

	X	Y	Z
A	Br₂	Al	Si
B	Br₂	Na	Mg
C	I₂	Mg	Na
D	I₂	Si	K

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