X and Y are two elements from Period 3 of the Periodic Table. Element $$\(X\)$$ has a higher electrical conductivity than element $$\(Y\)$$. Element $$\(Y\)$$ has a higher melting point than element $$\(X\)$$. Which formula is a compound formed from element $$\(X\)$$ and element $$\(Y\)$$ ?

A.
MgS
B.
\(\mathrm{Mg}_{2} \mathrm{Si}\)
C.
NaCl
D.
\(\mathrm{SiCl}_{4}\)
Chemistry
IGCSE&ALevel
CAIE
Exam No:9701_s24_qp_13 Year:2024 Question No:18

Answer:

B

Knowledge points:

3.5.1.1 more contents
3.5.1.2 more contents
3.5.1.3 more contents
3.5.1.4 more contents
3.5.1.5 more contents
3.5.1.6 more contents
3.5.1.7 more contents
3.5.2 predict the shapes of, and bond angles in, molecules and ions analogous to those specified in 3.5.1

Solution:

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