The arrow shows that the bond between the chlorine atom and the fluorine atom is the electrons in the bond are pulled and the chlorine atom is : ci - f:

Explanation:

When electrons are shared by two atoms then it results in the formation of a covalent bond.

Both chlorine and fluorine are non-metals and are electron deficient in nature. Therefore, when both of them combine then they tend to share the electrons and thus they form covalent bond.

Since fluorine is more electronegative than chlorine, therefore, a partial positive charge will develop on chlorine and partial negative charge will develop on fluorine atom.

Thus, we can conclude that the arrow shows that the bond between the chlorine atom and the fluorine atom is covalent. The electrons in the bond are pulled towards fluorine atom, and the chlorine atom is partially positive.

The answer choices for the first part of the questions are polar, ionic, and nonpolar . Out of those 3 which is the correct answer ? , because " Covalent " is not a choice .

Explanation:

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"