Answer:
1 pair of nonbonded electrons
3 pairs of bonded electrons
Explanation:
N has 5 electrons in its valence shell while O has 6.
Lewis structure of NO²⁻ is in the image.
N is in the middle of the structure because is the less electronegative atom. 3 electrons of this atom are forming the bonds and 2 electrons are nonbonded.
As you can see, N has 3 pairs of electrons forming 3 bonds with Oxygens and there is 1 pair of nonbonded electrons.
Answer:
A. 1.3 bison/mi^2
Explanation:
4500 bison divided by 3472 sq miles is 1.3 bison per mile squared.
The number of O atoms that ate in 1.25 mol of SO2 is 2.5 moles
<em><u>calculation</u></em>
moles of O= total number O atoms in SO2 x 1.25 moles
The number of O atoms in SO2 = 1 x2 = 2 atoms
moles is therefore= 2 x 1.25 moles = 2.5 moles
<span>Like dissolves like and unlike repels like. This applies to the polarity of the solutions. Polar dissolves polar and non-polar does not mix with polar solutions. In this case, the polar substance that can mix with water. Sugar and salt can be dissolved through agitation. Oil which is nonpolar is immiscible in water. Hence answer is D. </span>