1. Metal reactivity is different from nonmetal reactivity. In this lab you will
ID: 543247 • Letter: 1
Question
1. Metal reactivity is different from nonmetal reactivity. In this lab you will investigate metal reactivity and several other properties. How will the reactivity of metals be determined in this lab? 2. What is the difference between a GROUP and a PERIOD on the periodic table? 3. The radius of several elements is given below. Li 0.123 nm Na 0.157 nm K 0.202 nm Rb 0.216 nm Be 0.089 nm Mg 0. 136 nm Al 0.125 nm Ca 0.174 nm Sr 0.192 nm B 0.088 nm Ga 0.125 nm In 0.150 nm a. Which elements in the list above are found in Group IIA on the periodic table? b. State the general trend in atomic radius in Group IIA. c. Which elements in the list above are found in Period 2 on the periodic table? d. State the general trend in atomic radius in Period 2Explanation / Answer
Q1
typically, we compare them via reactions between aquoeus (ionic) solutions between metals
if M1 vs. M2, forms reaction, then we assume one metal has higher activity than the other metla
Q2
groups --> are columns/Vertical arrays in the periodic table, the elements contained in agropu have similar chemical properties + electronic configuration
period --> those are rows, or horizontal arrays, this are not common in chemical properties, but will have simlar mass/proton number count / Atomic number
Q3
a)
IIA = alkaline earth metals, Be, Mg, Ca, Sr
b)
trend in this gorup is "increases from top to bottom"
c)
for period 2
Na, Mg, Al
d)
trend in radius is "decreases from left to right"
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.