Which is NOT a characteristic property of metals resulto.gjk zx6 *s1wing from metallic bonding?sj*x 1g6 o.kzw

Metallic bonding characterizes the bonding present in the eli352 zp n4*qyv;xr ked;yj-we+jvf q;3 2yocpemental form of the metals on the periodic table.; eej v xr;2czi pd253;*qnk fy3+pwyvo4qy -j
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 characterize-zm y f5x6h if,(nay.md by the following statement:

  Which of the following iizgtqz r4k9cdjynx.v5wxs :i u7 *,4e )0 qla5s NOT true of metals?

Properties of substances can be related to the type of bonding, including ec;o9)/rzeu4p( 9 rj uk)kyuyflectry9 e (uupokuf4j/9 rkc)zr)y ;ical 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, or indicates, th*891r tsxfaz7c (5oi6uubphy j 8uw8v e strength of metallic bo9w fuua i88xt s py8v7r1jh5buo(z c6*nding?

Titanium, lithium, and potassium have melting points off ch/ 6gzh.it: 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 correcw4 fo oky4 0u:zp4od)qtly orders the elements by increasing melting pointuof4) 4kqw od:pyz40 os?

  The oxides of two period 3 elements, X and Y, react in water vdwpcx.wtm 4qy(26 w7 according to the eq6.tv (47c ydq2xwp mwwuations 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 t74qdyecy x( 6-zmwwy ,he following using knowledge of chemical strzmye4yd -x q6y 7w,(cwucture 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 reg9z/oj+w;zvfb 3g v )quarding metallic 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. )8 ietpt:pe /:4zuny eThe group 1 metals react with brtt:peuz 4i: )8neyep /omine to form soluble 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 are chari+ jbg*hc7 +ssxjd ;ykk5ta).uy9f3q acteristics 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 r3kr-wyo1 but,esults in high electricab1oyu -w 3kt,rl conductivity?

  When comparing Ca to Ni, which of crbl 5o73nvtr0l;qm :, e8sg uthe following is true?

  Vanadium and titanium are both common metals in aerospace v e2r 6p 7dz8s3g*kdtnengineering because they have a high strength to weighksd r32tge v *768pndzt 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.