Which of the following explains the vsepr geometry of a water molecule?
a. it is bent because there are four bonded pairs around oxygen.
b. it is tetrahedral because there are four bonded pairs around oxygen.
c. it is bend because there are two bonded pairs and two tons pairs around oxygen.
d. it is tetrahedral because there are two bonded pairs and two lone pairs around oxygen

It is bent, since there are two bonded pairs and two lone pairs around oxygen

Explanation:

In order to assign VSEPR geometry, we firstly need to draw a Lewis structure of a molecule. The following steps should be taken:

As a result, we have a molecule with two bonds and two lone pairs on the central atom, therefore, VSEPR theory predicts a bent molecule with a bond angle of about .

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance