1) Most metallic element:
A) Li or Be B) Be or Mg c) Al or K
2) Most acidic:
A) Na2O or Cl2O7 B) BaO or As2O5
3) Stronger reducing agent:
A) Al or Mg B) Na or K C) Br- or Cl-
Please explain why, thank you.
Of the elements: Li, Na, K, Rb, and Cs, the element with the most metallic character is A) Li. B) Na C)K D) Rb. E) Cs.
Rank the following elements in order of increasing metallic character (from least metallic to most metallic): Ne, K, Mg, Rb, N 2. Which of the following groups of elements all have 7 valence electrons? Select one: Li / Na / K / Rb N / P / As / Sb C / Si / Ge / Sn F / Cl / Br / I B / Al / Ga / In O / S / Se / Te
COnsider the following elements; Li Al Mg I S N a) Most Metallic? b) Least Metallic? C) Lowest Electronegativity? d) Highest ionization energy? e) Largest atomic radius? f) Which are non-metals? g) Which are conductors? h) Highest electron affinity? I) List them in order from small atomic to large size. J) Would gain two electrons to form ion? K) Would iodide ion considered to be cations or anions? L) Would lithium ion be larger or smaller than lithium atom? M)...
Which element is most metallic? a. Sn b. S c. Si d. F Circle the largest atom in each pair. a. C or O b. Rb or Na c. C or Al d. For Se
1.) Among elements 1–18, which element or elements have the smallest effective nuclear charge if we use the equation Zeff=Z?S to calculate Zeff? H, Li, Na, He, Be, Mg, B, Al, C, Si, N, P, O, S, F, Cl, Ne, Ar 2.) Which element or elements have the largest effective nuclear charge? H, Li, Na, He, Be, Mg, B, Al, C, Si, N, P, O, S, F, Cl, Ne, Ar
Most selective hydride reducing agent 1. Hz Na B Hy Lially li tal (04)3 Most reactive WRT reaction with CH NH2 -OH OCH Tuty are Hydrolyzes to a ketone promet ons & ca ofi, we boste neste lu both neither OH Spontaneously lactonizes Hz Eltzon both neither acid Transesterification is bare cat ce Reducing agent is Birch reduction NH, Na ROH (C) both (d) (a) (b) Birch product of benzoic acid 1:1 mixture of both a + b
Which element is most likely to form a 3- ion? Br Mg K N
5. When KF (s) is decomposed, which element will form at the anode? en 1. Using the following Latimer diagram (acidic conditions), what is the potential of the missing value the "?")? Answer: -0.93 0.38 -0.50 -0.51 -0.06 H₂PO HP H₂PO H₂po, PH₂ -0.28 -0.50 2. Based on the same diagram, will H3PO, disproportionate? Answer: 4. In each of the following reactions, which species is the reducing agent? a. 2 Li + Zn(NO3)2 → 2 LINO: + Zn Answer: b....
Valence electrons of which element experience the largest effective nuclear charge? (A) Mg (B) Na (C) Si (D) Al (E) P In which series do the ionic radii increase? (A) Rb+, Br−, Se2− (B) Br−, Se2−, Rb+ (C) Se2−, Br−, Rb+ (D) Br−, Rb+, Sr2+ (E) Rb+, Sr2+, In3+
H = 2.1 Li = 1.0 Na 1.0 K=0.8 Be = 1.5 Mg = 1.2 Ca = 1.0 B=2.0 Al 1.5 Ga 1.6 C=2.5 Si = 1.8 Ge = 1.8 N=3.0 P = 2.1 As = 2.0 O= 3.5 S = 2.5 Se = 2.4 F=4.0 CI = 3.0 Br=2.8 Use the electronegativities above and your knowledge of the shape of 2HCCH2 to determine the molecular polarity of CCHexplaining your answer in detall.