1.Why is chlorine smaller than sodium? (multiple choice)
-Because it has a greater nuclear charge and pulls electrons inward
-Because it has more energy levels
-Because it has less energy levels
-Because it has less protons

2.Which set of elements is in decreasing in size of atomic radius?(multiple choice)
-K, Ca, Se, Br
-Rb, K, Fr, Be
-Li, Na, Rb, Cs
-F, O, N, C

3.What element has the smallest atomic radius?(multiple choice)
-Sodium
-Chlorine
-Potassium
-Bromine

4.Which has a smaller radius O atom or O-2 ion?

5.Which one of the following sets is in order of decreasing electronegativity?(multiple choice)
-Zn, Co, V, K
-Na, F, Cs, Fr
-Po, Se, S, O
-Be, Ca, Li, F

6.Which of the following elements has the lowest electronegativity?(multiple choice)
-Sulfur
-Gallium
-Potassium
-Cesium

7.What is the definition of electronegativity(multiple choice)
-The amount of energy required to remove an outermost electron
-The desire to attract or pull in an electron
-The size of the atom
-The atomic weight of an element

8.What element would have the smallest radius according to the trend?(multiple choice)
-Fluorine
-Francium
-Hydrogen
-Helium

9.Why is Oxygen smaller than Selenium?(multiple choice)
-It has more protons in the nucleus pulling the electrons inward
-It has less protons in the nucleus pulling the electrons inward
-It has more protons in the valence shell
-it has only 2 energy levels and selenium has four

10.Where area of the periodic table has the highest ionization energy?(multiple choice)
-Upper left
-upper right
-lower left
-lower right

Maleic acid is a carbon-hydrogen-oxygen compound used in dyeing and finishing fabrics and as a preservative of oils and fats.* in a combustion analysis, a 1.054-g sample of maleic acid yields 1.599 g of co_2 and 0.327 g of h2o.* when 0.609 g of maleic acid is dissolved in 25.00 g of glacial acetic acid, the freezing point drops by 0.82 c. maleic acid does not ionize in glacial acetic acid, which has a freezing-point depression constant of k_{\rm f}=3.90~^\circ {\rm c}/m.* in a titration experiment, a 0.4250- g sample of maleic acid is dissolved in water and requires 34.03 ml of 0.2152 m koh for its complete neutralization.* the ph of 0.215 g of maleic acid in 50.00 ml of aqueous solution is found to be 1.80.part adetermine the empirical formula for maleic acid. enter the atoms in order ofc, h, and o. part bdetermine the molecular formula for maleic acid. enter the atoms in order of c, h, and o. express your answer as a chemical formula. part cbased on the titration data, how many ionizable h atoms are in each molecule of maleic acid, c4h4o4? express your answer as an integer. i got the part a and b which is cho and c4h4o4 respectively, can anyone me for part c? the below is what i have so far from other qa'sfinding the empirical formula for maleic acid, needs this info"a combustion analysis a 1.054-g sample of maleic acid yields 1.599g of and 0.327g of ".the rest of your data is used to find molar mass, molecular formula, equivalent mass, # of h+ ions / molecule & katypically this should be: a 1.054-g sample of maleic acid yields 1.599g of co2 and 0.327g of h2osofind mass using molar masses1.599g of co2 @ (12.01 g carbon) / (44.01 g co2) = 0.436 grams of carbon0.327g of h2o @ (2.016 g hydrogen) / (18.01 g/mol h2o) = 0.037 grams of hydrogen1.054-g sample - 0.436 grams of carbon - 0.037 grams of hydrogen = 0.581 grams of oxygennow use molar masses to find moles0.436 grams of carbon @ 12.01 g/mol = 0.0363 mol c0.037 grams of hydrogen @ 1.008 g/mol = 0.0367 mol h0.581 grams of oxygen @ 16.00 g/mol = 0.0363 mol oyour empirical formula ischo and molecular is c4h4o4