<ol><li>explain how the atomic radius of gallium differs from aluminium</li><li>explain how the electronegativity of gallium differs from aluminium</li></ol>

Md Ariful Islam

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Md Ariful Islam

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1. Gallium have lower atomic radius than Aluminium.

Because Gallium have filled d orbital but have no any filled d orbital and d orbital have poor shielding so, gallium have lower size than aluminium or approximately same size of Gallium and Aluminium.

2.

Electronegativity of Ga is more than Aluminium.

Due to poor shielding of d orbital and smaller size in gallium than Aluminium.

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A chemist weighed out 69.7g of gallium. Calculate the number of moles of gallium she weighed out

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i. Define the term ‘electronegativity.’ ii. Explain how the concept of electronegativity relates to bond polarity.

I. Electronegativity, symbolized as χ, is the tendency of an atom to attract shared electrons to itself. An atom's electronegativity is affected by both its atomic number and the distance...

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Give the names of any two alloys of aluminium which have some amount of copper or magnesium. How are these more advantageous than pure aluminium?

1 Duralumin is 95% aluminium, 4% copper, 0.5% magnesium, and 0.5% manganese - has increased strength and hardness compared to pure aluminum 2 Silumin.Aluminium-silicon alloys contain 3 to 25% silicon...

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What mass of Gallium chloride would react with excess fluorine to produce 78.9 g of chlorine? Gallium fluoride is the other product.

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Gallium arsenide has a zinc blende crystal structure. Assume a lattice constant of a = 5.65 Å. Determine the density of gallium arsenide in g/cm3.

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Gallium has two isotopes. One isotope is 69-Ga and has a relative abundance of 60.50%. The relative atomic mass of gallium is 69.70 amu. Find the relative isotopic mass of the other isotope.

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Gallium Arsenide (GaAs) and Gallium Phosphide (GaP) both have zinc blende (ZnS) crystal structure. Which is less dense among these two?

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