Recitation Workshop Module 4 PDF

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Recitation Group Weekly Course Work...

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Recitation Workshop 4

Module 4

Worth 5 pts

1. In your own words, describe what happens during ionic bonding. In an ionic bonding, usually electrons are transferred rather than shared. Electrons are transfer from one atom to another 2. How many valence electrons do atoms with the following electron configurations have? a) 1s22s22p6 8 b) 1s22s22p63s2 2 c) 1s22s22p63s23p1 3 d) 1s22s22p63s23p64s23d104p5 17

3. Draw a Lewis symbol for each of the following:

..

a) 17Cl

:

Cl .

.. ..

b) 35Br

:

Br

.

.. ..

c) 53I

:

I

..

.

..

d) 7N

.

.

N

. ..

e) 8O

:

O.

. ..

f) 9F

:

F

:

.

4. What would be the chemical symbol for an ion with each of the following numbers of protons and electrons? a) 15 protons, 18 electrons P^3b) 17 protons, 18 electrons Cl^c) 12 protons, 10 electrons Mg^2+ d) 19 protons, 18 electrons K^+ 5. What is the charge on the monatomic ion formed by each of the following elements? a) lithium +1 b) phosphorus -3 c) sulfur -2 d) aluminum +3

6. How many electrons are lost or gained when each of the following atoms forms an ion? a) rubidium -1 b) iodine +1 c) oxygen +2 d) sodium -1

7. Indicate whether or not each of the following pairs of atoms/ions are isoelectronic. a) K+ and Ar Isoelectronic b) Al3+ and Cl Not isoelectronic c) S and Cl Not Isoelectronic d) Na+ and Mg2+ Isoelectronic

8. What is the chemical formula of the ionic compound produced through the interaction of each of the following pairs of elements? a) Li and S LiCl b) Mg and N Mg3N2 c) Ca and Cl CaCl2 d) K and F KF

9. Name the following binary ionic compounds: a) CaCl2 Calcium Chloride b) Ca2C Calcium Carbide c) Be3N2 Beryllium Nitride d) K2S Potassium sulfide e) NiO Nickel (||) Oxide

f) FeN Iron (|||) Nitride g) AlN Aluminum Nitride h) BeO Beryllium Oxide

10.Write the formulas of the following ionic compounds: a) Aluminum nitrate Al(NO3)3 b) Iron(III) sulfate Fe2(SO4)3 c) Silver nitrate AgNO3 d) Lead(IV) hydroxide Pb(OH)4...