11. What is the mass number

of an element if its atom

contains 10 protons, 10

electron, and 12 neutrons?

A 12

C20

D. 32

Atoms with an electric charge come charged by gaining or losing

What causes an element from the periodic table to be more or less reactive?

A hot-air balloon is filled with air to a volume of 4.00 3 103 m3 at 745 torr and 218C. The air in the balloon is then heated to 628C, causing the balloon to expand to a volume of 4.20 3 103 m3.

Which plot element answers all the questions raised in the story and ties up all the loose ends? falling action resolution climax exposition

Use "Folded Mountain" in a sentence? For science

Why organizing elements in increasing mass numbers would be rejected as a form of the periodic table?

Which elements can join with other elements to form covalent bonds? Check all that apply. beryllium (Be) carbon (C) cesium (Cs) hydrogen (H) iodine (I) nitrogen (N)

What is the element in period 5 with 6 valence electrons?

What unit is electrical energy typically measured in on energy bills

Hydrogen is not chemically stable because