Which event would be impossible to explain by using John Dalton's model of the atom? An iron atom emits particles when it is struck by light.
An oxygen atom combines with two hydrogen atoms to form water.
An acid reacts with a base to form salt and water.
The atoms in sodium metal react with water.

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying

it is a solid

explanation:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.