Rank these elements according to atomic radius. K, Rb, Ca, Be, Mg

Expert Solution

Increasing order (smallest) Be < Mg < Ca< K < Rb (largest)

Atomic size gradually decreases from left to right across a period of elements. K and Ca are of same period but K is in group 1 and Ca is in group 2, so atomic radius of K is greater than atomic radius of Ca.

K and Rb are of same group, but K belongs to period 4 while Rb to period 5. Moving top to bottom

atomic radius increases, so atomic radius of Rb is greater than atomic radius of K.

Ca, Be, Mg are of same group, Be belongs to period 2, Mg period 3 and Ca period 4. Moving top to bottom, atomic radius increases, so atomic radius of Ca is greater than atomic radius of Mg and atomic radius of Mg is greater than atomic radius of Be.

queen_honey_blossom answered 2 years ago

Rank the following atoms or ions in order of increasing radius: As^3-, Se^2-, Ge^4+, Rb^+, Br^-...

Rank the following atoms or ions in order of increasing radius: As^3-, Se^2-, Ge^4+, Rb^+, Br^- Ca, Ba, Sr, Be, Mg Al, Cl, P, Si, S Sb, As, F, S, Tl Name an element who have similar physical/and or chemical properties to the following elements: Al Ca O

Rank of most reactive to least reactive: Ca, Na, Mg, Cu, Zn, Fe How do these...

Rank of most reactive to least reactive: Ca, Na, Mg, Cu, Zn, Fe How do these relate to their position on the periodic table?

1.gives the correct order for atomic radius for Mg, Na, P, Si and Ar? 2.Which one...

1.gives the correct order for atomic radius for Mg, Na, P, Si and Ar? 2.Which one of the following elements is the most metallic? a.Ar b.K c.Mg d.Al e,Na 3.A gas mixture of Ne and Ar has a total pressure of 4.00 bar and contains 16.0 mol of gas. If the partial pressure of Ne is 2.75 bar, how many moles of Ar are in the mixture? 4.Which statements about viscosity are generally true? (i) Viscosity increases as temperature decreases....

Arrange elements according to electronegativity N, Ga, K, Cs, O

The atomic radius of an oxygen atom is 73 pm, and the ionic radius of the...

The atomic radius of an oxygen atom is 73 pm, and the ionic radius of the ion O2− is 140 pm. Explain the relative radii by estimating Zeff for each of these species.

What are the periodic trends in atomic radius?

Fraction dry weight N 0.12 P 0.02 S 0.01 K 0.01 Na 0.01 Ca 0.005 Mg...

Fraction dry weight N 0.12 P 0.02 S 0.01 K 0.01 Na 0.01 Ca 0.005 Mg 0.005 Cl 0.005 Fe 0.002 Prepare a recipe for an inorganic medium to be used in a laboratory CSTR to grow 500 mg VSS/d of bacteria biomass, assuming that the composition of the biomass is as listed below. Determine the concentration of essential inorganic compounds required for a feed rate of 1 L/d. Assume that phosphorus is added as KH2PO4, sulfur as Na2SO4, nitrogen...

Which is expected to have the smallest atomic radius?

Which is expected to have the smallest atomic radius? Na Mg AI Ar CI

Consider the atomic radius of the atoms in Period 2. Notice that the radius decreases from...

Consider the atomic radius of the atoms in Period 2. Notice that the radius decreases from left to right accross the period, even though the number of valence electrons increases. Why doesn't atomic radius increase across a period? (Hint: consider effective nuclear charge.)

Write the molecular & net ionic equations for the following: Ca(s) + Mg(NO3)2 (aq) --> Ca...

Write the molecular & net ionic equations for the following: Ca(s) + Mg(NO3)2 (aq) --> Ca (s) + Fe(NO3)2 (aq) --> Ca(s) + Cu(NO3)2 (aq) --> Ca (s) + Zn(NO3)2 (aq) --> Mg (s) + Fe(NO3)2 (aq) --> Mg (s) + Cu(NO3)2 (aq) --> Mg (s) + Zn(NO3)2 (aq)--> Fe(s) + Cu(NO3)2 (aq) --> Zn (s) + Fe(NO3)2 (aq) --> Zn (s) + Cu(NO3)2 (aq) --> Sn (s) + Cu(NO3)2 (aq) -->

Question