What is lithium in the periodic table? Why is einsteinium in the metal family? Which isotope of lithium has 3 neutrons? What is francium found in? What is the atomic number of niobium? What is the density of paraffin? What is the density of nitrogen gas (N2) at STP?
What is the chemical element bromine? What is the atomic number of einsteinium? What is beryllium's atomic number? What is the atomic number of molybdenum? What is the atomic number for tellurium? What is the atomic number of rubidium?
Alkali metals: Alkali metals are extremely reactive soft metals found in the first column of the periodic table on the left side. Sodium, lithium, potassium, rubidium, francium, and cesium are the six alkali metals. Their outermost subshell contains one electron. Alkaline earth metals: These are...
True or False? If an element (abbreviated X) has a ground state electron configuration of (Ar)4s23d104p4, then the formula of the compound that X forms with sodium is Na2X. True or false? Cesium has a greater atomic radius than lithium. True or false? The electron conf...
Why is Rb (rubidium) commonly used to make BECs? Rb is commonly used to make BECs because it is a highly reactive metal that has a low melting point and can be easily cooled to the temperatures required for BEC formation. Additionally, it has a simple atomic structure, making...
Rank the following elements from the most reactive to least reactive. Rubidium, Rb Magnesium, Mg Argon, Ar Lithium, Li Which element has the smaller atomic radius: Cl or F? Explain. Which group of elements is lifted in order of increasing electronegativity? A) F is le...
What is the atomic number of rubidium? What is the atomic number of molybdenum? What is the atomic number of antimony? What is the atomic number for europium? What is the atomic number for cesium? What is the atomic number of radium? What is the chemical symbol for francium? What is th...