23.11.2014 Views

Science - Teachers Sri Lanka

Science - Teachers Sri Lanka

Science - Teachers Sri Lanka

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

²<br />

²<br />

O ² + × O<br />

×× →<br />

²<br />

O ×<br />

²<br />

×<br />

O<br />

××<br />

² ²<br />

×<br />

Two Oxygen atoms Oxygen Molecule (O 2<br />

)<br />

Outer most shell has six electrons.<br />

Two electrons pair keep share.In order to<br />

obtain of full outer energy level and gain the<br />

electron configuration of nobel gas Neon<br />

²<br />

²<br />

××<br />

²<br />

²<br />

×<br />

N ² + × N × →<br />

² N × N<br />

²<br />

×<br />

×<br />

²<br />

Two Nitrogen atoms<br />

Outer most shell has five electrons<br />

×<br />

²<br />

²<br />

²<br />

×<br />

×<br />

Nitrogen molecule<br />

(N 2<br />

)<br />

Three electron pain keep share. In order to<br />

obtain of full outer energy level and gain the<br />

electron configuration of nobel gas Neon<br />

Similarly stucture of water molecule can be shown as follows.<br />

××<br />

²<br />

H<br />

× ×<br />

²<br />

H<br />

×<br />

×<br />

×<br />

×<br />

²<br />

H<br />

→<br />

×<br />

×<br />

×<br />

×<br />

²<br />

H<br />

Oxygen atom Two Hydrogen atoms Water molecule ^H 2<br />

O&

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!