Bohr Diagram For Magnesium. 12 is a block s group 2 period 3 element with an atomic mass of 24 3050. The second holds 8.
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In the bohr model electrons are pictured as traveling in circles at different shells depending on which element you have. Magnesium has 12 protons and 12 electrons. Bohr diagrams show electrons orbiting the nucleus of an atom somewhat like planets orbit around the sun.
12 is a block s group 2 period 3 element with an atomic mass of 24 3050.
The remaining 2 are placed in the third electron shell which is full when it holds 8 electrons. 4 the 2nd shell can hold up to 8 electrons. Magnesium has 12 protons and 12 electrons. Bohr diagrams show electrons orbiting the nucleus of an atom somewhat like planets orbit around the sun.
