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Chemistry

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Ashton Stoltenberg

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Cards in this guide (13)
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 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 effect does a lone electron pair have on molecular shape

The lone pair pushes bonding electron pairs away.

How many total electrons can the p orbitals hold

Six in p orbital, in each sublevel of p (px, py, pz) there are two electrons at max.

Why does the s orbital fill before the p orbitals

The s orbital is lower in energy than the porbital.

What is a consequence of electron-pair repulsion around an atom

The atoms sharing the electron pairs will spread out around the central atom. Apex

How is the electronagativity trend related to the first ionization energy trend

Electronegativity and first ionization energy both increase as you move up the periodic table

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.

What bond has a very strong dipole dipole force

a hydrogen bond

Which of the following is the correct formula for aluminum oxide

Al203 apex

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