Labels:ball | box | cell | earth | frisbee | hakham | plaything | sky | tribute album OCR: V ALENCY THE VALENCY or "combining Hydrogen therefore has a valency of1, power atom refers to the Oxygen has eight electrons: two the number of chemical bonds it can first shell and 17 the second shell. make This is the same as the number In order to fill the second shell, of electrons the atom needs to gain, must gain two electrons the second lose or share to create full outer shell holds eight electrons) shell. For example, hydrogen has one Oxygen therefore has a a valency of 2. electron. Ifit gains one more electron, the first shell will be full (the first shell OXYGEN holds up to two electrons only) ATOM Using valencies Oxygen bas valency bydrogen bas valency of In water two atoms of hydrogen quob of ine foxygen, with one giving atom the HYDROGEN ATOM HYDROGEN ATOM formula H2O. Hydroge ...
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