the best which of the elements below is most metallic

Bonding in Metals: The Electron Sea Model | Introduction …

Metallic bonds are mediated by strong attractive forces. This property contributes to the low volatility, high melting and boiling points, and high density of most metals. The group-XII metals zinc, cadmium, and mercury are exceptions to this rule.

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Class 11 Important Questions For Chemistry - …

(ii) Non metallic elements are less in nuer than metallic elements. (iii) For transition elements, the 3d-orbitals are filled with electrons after 3p-orbitals and before 4 s-orbitals. (iv) The first ionisation enthalpies of elements generally increase with increase in atomic nuer as we go along a period.

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WebElements Periodic Table » Protactinium » the essentials

Protactinium has a bright metallic lustre which it retains for some time in air. The element is superconductive below 1.4 K. The element is a dangerous toxic material and requires precautions similar to those used when handling plutonium. Protactinium is one of the

sorting - Which sort algorithm works best on mostly …

I think bubble sort might beat this if the nuer of unsorted elements is very small (like, one or two), but in general this strikes me as probably the best solution. – Sol Oct 20 ''08 at 21:55 Because of step 1, for any elements that are already sorted there is exactly one compare and zero data-moves, which is obviously the best you can do.

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Additionally, the developed D&P steel demonstrated the best coination of yield strength and uniform elongation among all existing high-strength metallic materials. In particular, the uniform elongation of the developed D&P steel is much higher than that of metallic materials with yield strength beyond 2.0 GPa (see Figure 3 below).

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The 15 Most Precious Metals in the World - Geology Page

The most known precious metals are the gold and silver coinage metals. Although both have industrial uses, in art, jewelry, and coinage, they are better known for their uses. Other valuable metals include metals from the platinum group: ruthenium, rhodium

Atoms of elements that are in the same Mendeleev left gaps in …

10. Elements that have one valence electron tend to A. be highly reactive B. not react 11. The three main groups of elements are metals, nonmetals, and A. alkali metals B. semiconductors 13. Most elements on the left side of the periodic table are

The Periodic Table - Chemistry | Socratic

The periodic table is the table that indexes all chemical elements. It is arranged in order of atomic size (Hydrogen, then Helium, then Lithium, etc.) which is determined by the nuer of protons in the element. The table is subdivided into periods (rows) and groups (columns) of elements that share common characteristics, hence the name "periodic".

Trends Across Period 3 of the Periodic Table Chemistry …

The more electrons a metallic element can contribute to the metallic bond the more mobile electrons there will be and the stronger the metallic bond will be! In general, we can say that the elements become less metallic in nature (more non-metallic) across period 3 from left to right.

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Reactivity series - Wikipedia

In chemistry, a reactivity series (or activity series) is an empirical, calculated, and structurally analytical progression of a series of metals, arranged by their "reactivity" from highest to lowest. It is used to summarize information about the reactions of metals with acids and water, single displacement reactions and the extraction of metals from their ores


The non-metallic character of elements decreases down the group. In fact the heaviest element in each p-block group is the most metallic in nature. This change from non-metallic to metallic character brings diversity in the chemistry of these elements depending

The Parts of the Periodic Table - Angelo State University

The elements can be classified as metals, nonmetals, or metalloids.Metals are good conductors of heat and electricity, and are malleable (they can be hammered into sheets) and ductile (they can be drawn into wire).Most of the metals are solids at room

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Nonmetal Elements on the Periodic Table: Definition, …

Only 17 elements on the periodic table are nonmetal elements, yet they make up most of the matter in the universe and most of us In the periodic table below, the nonmetal element squares are

Bands, Bonds, and Doping

Another term frequently used to describe this type of bonding is "metallic bonding," because solids with this type of bonding exhibit metallic properties and are therefore egorized as metals. As we shall see later in the tutorial, elements with metallic bonding are very good conductors of electricity, because of the nondirectionality of the orbitals (i.e., electrons can easily move in any

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Periodic Trends Multiple Choice Review PSI Chemistry Name

Metallic Character ( ) 45)Of the elements below, _____ is the most metallic. A) Na B) Mg C) Al D) K E) Ar 46)The list that correctly indies the order of metallic character is _____. A) B > N > C B) F > Cl > S C) Si > P > S D) P

[Solved] The melting temperatures of the metallic …

Answer to The melting temperatures of the metallic elements of Group 1A are given below. Lithium, 180.54 C Sodium, 97.72 C Potassium, 63.38 C Rubidium, 39.31 C

Chapter 6. Periodic Relationships Among the Elements

48. Which of the elements listed below has the greatest atomic radius? A. B B. Al C. S D. P E. Si 49. Which one of these ions has the largest radius? A. Cl-B. K+ C. S2-D. Na+ E. O2-July 29, 2009 [PROBLEM SET FROM R. CHANG TEST BANK] 50. Arrange