Which is NOT a characteristic property of me e5bhb:-5dk pyv ;ft9otals resulting from metallic bonding yp:eb-k9vbd5tfh; o5?

Metallic bonding characterizes the bonding present in the elemenb 8id c;5c4mt:bz1x r wmmp g7 n4q:l:5gbwb3ftal form of the metals on the periodic 4b 37i ;mnx5w:wpgg mtf4blz ::c5d m q8cbb1rtable.
1.Describe features of metallic bonding.
2.Describe 3 common properties of metals that result from metallic bonding.
3.Solid sodium chloride is brittle while sodium metal is not. Explain this difference in properties.

  Metallic bonding is best ck5hqf4 os zn5 +me5)pw:1pec rharacterized by the following statement:

  Which of the following is NOT true of metals?d +u:ql(vd6mm l*3rqw

Properties of substances can n6( z 1 jitvaam:,1kmfbe related to the type of bonding, including electri1i :na1f(mjkamz6t ,v cal conductivity.
1.In part (a) of the table below, state examples of one metallic and one non-metallic substance that are electrically conductive.
2.In part (b) of the table below, draw a diagram that demonstrates the bonding of each substance mentioned in part (a).
3.In part (c) of the table below, state why this bonding structure enables electrical conductivity.

Non-metallic Metallic
(a)Substance with electrical conductivity
(b) Diagram or model of structure
(c) Reason for Conductivity

  Which characteristic best corql9 /5mko jnb,my;/t1rlmah8 responds to, or indicates, the strength of metallic 5r/byq/9m t lmhk1no ;j,8lmabonding?

Titanium, lithium, and potassium hatbw4f61ip1s i* 5gctjve melting points of 1910$^{\circ}C$,181$^{\circ}C$,and 68$^{\circ}C$,respectively.
1.Outline two characteristics of a metallic element that affect the strength of the metallic bond.
2.In terms of atomic structure, the observed melting points of titanium, lithium, and potassium listed above.

  Based on periodic trecql ghc3fkk5 +cz4 umord3 5:ar4vvi6)7nn+ynds, which series correctly orders the elements by increasing meltincf64+kq3md +kzo 5:43n)uvnihcrl y 5c 7rgvag points?

  The oxides of two period 3 elements, X and Y, react in waterb sl 7ret(,jlv.ai3aleg;-a0 according to the equati,v .ib (3ea als;g l7tr-0elajons below.
I. $XO_{2(s})$ + $H_2O_{l}$→$H_2XO_{3(aq)}$
II. $YO_{2(s})$ + $H_2O_{l}$→$Y(OH)_{2(aq)}$
1.Identify elements X and Y. Element X is   ;Element Y is   .
2.Predict whether element X or Y would have a higher melting point. Element  ----待选择----XY  will have a higher melting point than element  ----待选择----XY 

  1.Explain the difference in physical properties of the following using knowlh,;xe gng hbj1* b1ih2edge of chemich bbgh;x,1j21*ig nhe al structure and bonding:
.1.The boiling point of hydrochloric acid (HCl) is  ----待选择----lessmore  than that of lithium chloride (LiCl).
.2.Calcium bromide ($CaBr_2$)  ----待选择----cancannot  conduct electricity in a molten state and aqueous solution; Bromine ($Br_2$)  ----待选择----cancannot .
.3.The boiling point of HI is  ----待选择----lowerhigher  than $I_2X$.
2.Arrange bromine ($Br_2$), potassium and potassium bromide in order of increasing boiling points.
 ----待选择----brominepotassiumpotassium bromide ＜ ----待选择----brominepotassiumpotassium bromide ＜ ----待选择----brominepotassiumpotassium bromide 

  Which statements regarding metallic bondi*4o8st-di( r 43a0uywxjufglng are correct?
I.The higher the charge on the ion of a metallic element, the weaker the bond
II.A metallic element with a greater ionic radius will have a weaker metallic bonding
III.Metallic bond strength increases with the number of delocalized electrons

Lithium is a metal in group 1 of the periodic table.61 ou xx/ea(de/ da6lh2,xllv The group 1 metals react with bromine to form sou /l6xha ,ldax(2 dee vxlo1/6luble bromide salts, which all have the same lattice structure.
1.The melting points of the group 1 metals and their bromide salts are shown in the graph.


1.Explain the variation in the melting points of the group 1 metals.

2.The following diagram shows the electron density distributions formed when bromide ions interact with lithium and sodium ions.

Based on the diagram, suggest why the melting point of lithium bromide is lower than that of sodium bromide.
2.Lithium is a good electrical conductor, whereas lithium bromide is an electrical insulator.
.1.Explain the difference in the electrical conductivities of lithium and its bromide salt.
.2.Explain how water interacts with lithium bromide to produce an electrically conductive solution.

  Which of the following p4 rig .exori8-y r;lq(o2s2l are characteristics of transition elements?
I.High melting points
II.Soft
III.Electrically conductive

  Which of the following explains why transition metals have high melting points?

  Which of the following characteristics of transition metals results in high elechywj7x7gj c3k u:00nct jy3ch 7wc:nx u00g7jkrical conductivity?

  When comparing Ca to Ni, which of the following is tru/6eo xw mgr)dx/+ee.se?

  Vanadium and titanium are both common metals in aerospace egf*roe0a1svd v drmn7o/.7,g3,oyr mngineering because they have / os0 a3, ogo.fyd mre,v1d rg7vrnm7*a high strength to weight ratio.
1.vanadium has a  ----待选择----higherlower  melting point than titanium.
2.Titanium and vanadium are both able to conduct electricity. Explain how this is possible.
3.Tin is not a good choice for use in aerospace engineering. Predict, with a reason, why this is so.