An ethane molecule contains 2 atoms of carbon. The number 2 represents how many
ID: 1064006 • Letter: A
Question
An ethane molecule contains 2 atoms of carbon. The number 2 represents how many significant figures?
one
two
three
infinite
Element A has an electronegativity of 0.8 and element B has an electronegativity of 3.0. Which statement best describes the bonding in A3B?
The compound is largely ionic with A as the cation.
What mass of ammonia , NH3 , contains the same number of molecules as 3.00 g of trichlorofluoromethane, CCl3F?
0.0412 g
Which of these ions is the largest?
The compound is largely ionic with A as the anion. The AB bond is largely covalent with a + on A. The AB bond is largely covalent with a - on A.The compound is largely ionic with A as the cation.
What mass of ammonia , NH3 , contains the same number of molecules as 3.00 g of trichlorofluoromethane, CCl3F?
2.69 g 0.371 g 24.2 g0.0412 g
Which of these ions is the largest?
S2- I- Cl- O2-Explanation / Answer
4. I- IS THE LARGEST ION AMONG ALL DUE TO ITS ATOMIC NUMBER AND SHELLS PRESENT IN IT
3.The AB bond is largely covalent with a + on A.
EXAMPLE BF3
Boron doesn't form ions because the total energy needed to remove three electrons to form a B3+ ion is simply too great to be recoverable when attractions are set up between the boron and fluoride ions.