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Chemistry

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Robbie Blick

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Cards in this guide (11)
What is a lone pair

A lone pair is elements in a chemical reaction that are not used in the reaction.

How is electroplating done

the metal on which electroplating is to be done is taken as cathode ( negative electrode) . the metal of which electroplating is to be done is taken as anode ( positive electrode) and the salt solution of the metal of which electroplating is to be done is taken as electrolyte .

example-

if we want to electroplate iron with copper then iron is taken as cathode and copper is taken as anode and electrolyte is copper sulphate.Electroplating is the process of plating one metal onto another by hydrolysis, most commonly for decorative purposes. This is done through the use of copper in a copper sulfate bath.

A molecule having four total electron groups around the central atom has three bonding electron groups and one nonbonding electron group what is its molecular structure

trigonal pyramidal

What would cause the shape of a molecule to be tetrahedral

Four atoms bound to a central atom with no lone pairs

What makes atoms spread out around a central atom

the shared valence electron pairs repel each other.

Which of the following configurations would form a bent molecule

a molecule with two bound atoms and one lone electron pair -apex

What best describes a bond formed between two unlike atoms

The type of bond is determined by the difference in electrongativity of atoms

How does the shape of a molecule affect the polarity of the molecule

C.A molecule that has a symmetrical shape will be a nonpolar molecule.

What are repelled in the VSEPR theory

Electron pairs

What would be the percent yield of the reaction be if the theoretical yield is 11.22 g but the actual yield was 8.67 g

In this case the yield is 77,27 %.

How does a lone pair contribute to the molecular shape

The lone pair repels the electrons of the adjacent bonds more so than does a bonding pair of electrons, so thus alters the molecular geometry of the molecule.

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