Which is NOT a characteristic property of metals resultif( dccfv- 3-dvng from metallic bonding(dc 3f-vf- cvd?

Metallic bonding characterizes the bonding present in the elemental form of th/4tf l eaa*oe, zj+ucy vsf;d(lcr6)z 9h9y1me metals of 6l dj*r)yeosav a(/ye1 zcm4uft9 ;,l+h 9czn 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 bes swzp r )lvs)d-,5wx7ct characterized by the following statement:

  Which of the following is NOT true of met-tdihh5s+ ;m j34g kjh6mrp ;mals?

Properties of substances can be related to the type of bonding, including e ( 6meeo;*)bnpeada w5 b2s1rtlectric6mbae *;2p5rteea 1n os( d)wbal 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, the strength of met8-ze jm 86na ,-ncoljp,222l19nqwayvipshm allicy,m8s2-8,hp vnwin ja9oca-ml6j 21e2 znpql bonding?

Titanium, lithium, and potassium have mellxuequk(fx),(pdv 815 i2ix o ting 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 sei9 x( j;xbtcs31w2qke ries correctly orders the elements by increasing meltinjtw(1xi2 cb; xk9q3s eg points?

  The oxides of two period 3 elements, X and Y, xj0;ez/4bnn wi1r;cfreact in water according to the equations below.e/x4;nwjci ;br0z1nf
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 differz9nqgbggq 7 7smyj7;. ence in physical properties of the following using knowledge of chegg;jm7.gz79q ybs7nq mical 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 regai3- kc;l mpbd/qw;q :mrding 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. The group 1 mefut /e)fzbni l6-u9wq0n10 hetals react with bromine to form solublef/h9-fz uti6) 01lwe0uqn neb 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 followilsgfg2dp h;k; *uh(o/ tnkzpa51p2 )i ng 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 j* iy67 ksma9ay2cls7wno 3 s.transition metals results in high electrical conductivi3sj ksl2.wmy*o6 syainc7a97ty?

  When comparing Ca to Ni, which of the following isx.e1r (z6dtz v3,nu fn true?

  Vanadium and titanium are both common metals itv6fvx1z4q p1l3)m h wn aerospace engineering because they have a high strength to1fztlv 6vm)1 43wqp xh 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.