In polymeric \( \left(\mathrm{BeCl}_{2}\right)_{\mathrm{n}} \), there are:....

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In polymeric \( \left(\mathrm{BeCl}_{2}\right)_{\mathrm{n}} \), there are:
\( \mathrm{P} \)
(1) Three centre four-electron bonds
(2) Three centre three-electron bonds
(3) Two centre three-electron bonds
(4) Two centre two-electron bonds


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