Which is NOT a character8w0jyq)l-zh+ a9f d gucpb6q)istic property of metals resulting from metallic bonding) -q0uwqhcpf gjlb)z6d y98 +a?

Metallic bonding characteryg ftyi2x/fo19y2-yx izes the bonding present in the elemental form of the metaltyxf1 g29y - oy/iyfx2s on the periodic table.
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 characterized by th.j j.ne (w9aqy(xhoy-a9uxu5 e following statement:

  Which of the following is NOTc1qwsq5l h cn.h)sc)0 true of metals?

Properties of substances can be re64:khwo ia2pb lated to the type of bonding, including electrica hiak24:o6bpwl 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 corresponds to, oruwm+ g)4;boqo indicates, the strength of metallic 4 ;w+om)gbquobonding?

Titanium, lithium, and potassiu5 * lqdn3gfg5osebfr+ 0;9ch btvo.3 fm have 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 trends, which series cor.v1ylwa uj op(2/6du.mw m;h xrectly orders the elements by increasing melting points?uvjmw.o 1 (h/ 2wmpl.; xy6aud

  The oxides of two period 3 elements, X and Y, react in0qt8kgn fq.c;c11u pswpppw n /6wx- 2 water according to the equations below. q /nu2wwq0n ;sptp-pkp16.1w cfgx c8
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 83l atpt 7kol-5vs-0mbrzoj2/l/y fu of the following using knowledge of che-lfb/o3rsua plol 08jv7t-y z/ 5m t2kmical 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 metallicz 1yoxvk-e6y8 bonding 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. The group 1 metals reacm7;wnltdh; 3 ct with bromine to form soluble bromide salts, which all have the same lach ;ntdw37ml;ttice 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 are characteristics ofcxpc 3: bik;/j 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 char: fnl1a7pq2. ) nuifhzacteristics of transition metals results in high electrical conductq1fnl .7 i fnha:)z2upivity?

  When comparing Ca to Ni, which of the following is trf z*175i muqwlg x*rcb,/1eu cue?

  Vanadium and titanium are both common metal si gls)xw-2w;ohq+fwn 42h0 ts in aerospace engineering because they have a high strengw fo4it0s2 hh2)gqls ;nxw+-wth 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.