Question

9. Which of the following elements will form a basic oxide?
a) An element with atomic number 7
b) An element with atomic mumber 6
c) An element with atomic number 12
d) An element with atomic number 16
10. Element X forms a chloride with the formula XCL, which is
solid with a high melting point. X would most likely be in the
same group of the Periodic Table as?
a) Na
b) Mg
c) AI
d) Si
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11. Which of the following statement is not a correct statement
about the trends when going from left to right across the Periodic
Table?
a) The number of valence electrons increases
b) The atomic size decreases
c) The oxide become more acidic
d) The metallic character increases​

Answer 1

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