A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it? OV
Na
Mg
Se
Save and Frit

Explain which atom l or m is more stable and why

Which best describes how johannes kepler developed his laws of planetary motion

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle