1. Which of the following compounds has physical and chemical properties similar

Question

1.     Which of the following compounds has physical and chemical properties similar to the element sodium? A) NaCl B) NaClO3 C) Na2CO3 D) all of the above E) none of the above

2-.     Which of the following groups of elements has the highest ionization energy? A) Group IA/1 B) Group IIA/2 C) Group IIB/12 D) Group VIIA/17 E) Group VIIIA/18

3-.     What is the chemical formula for mercury(I) nitride? A) HgN3 B) Hg2N3 C) Hg3N2 D) (Hg2)2N3 E) (Hg2)3N2

4-.     Which of the following solid compounds is insoluble in water? A) Li2CO3 B) AgC2H3O2 C) Cu(NO3)2 D) all of the above E) none of the above

5-     Given that P-31 is the only natural isotope of phosphorus, what is the mass of one P atom and Avogadro's number of P atoms, respectively? A) 30.97 amu and 30.97 g B) 30.97 g and 30.97 amu C) 31 amu and 31 g D) 31 g and 31 amu E) none of the above

Explanation / Answer

1)E) none of the above

2)
E) Group VIIIA/18

3)
C) Hg3N2

4)
B) AgC2H3O2

5)
A) 30.97 amu and 30.97 g

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