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Alkali metals have increasing reactivity going down the group. Francium may not be considered as it is not a stable atom: it is radioactive. The next four are Cesium, Rubidium, Potassium and Sodium in decreasing reactivity order.
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∙ 9y ago
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∙ 9y agoAlkali metals have increasing reactivity going down the group. Francium may not be considered as it is not a stable atom: it is radioactive. The next four are Cesium, Rubidium, Potassium and Sodium in decreasing reactivity order.
K Rb Cs and Fr are most reactive elements. Their atomic radius is more. Hence, they can easily loose electrons.
Alkali metals are the most reactive metals. The reactivity of these elements increase down the group. Cs,Rb,K,Na are the most reactive alkaline metals.
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∙ 15y agoFrancium. This is because it has the most energy levels in the alkali group, and the electrons are farther away from the nucleus. This means that the electrons are more easily taken.
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∙ 14y agoIf the question is "Which of the Alkali Metals are most important for life?" then the answer would be Sodium and Potassium. These are two elements that your body needs in order to survive.
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∙ 12y agofrancium. it is the most reactive element, but unfortunately it is also very radioactive.
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∙ 11y agoCesium and francium are the most reactive because down the group, reactivity increases.
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∙ 9y agoK Rb Cs and Fr are most reactive elements. Their atomic radius is more. Hence, they can easily loose electrons.
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∙ 9y agoAlkali metals are the most reactive metals. The reactivity of these elements increase down the group. Cs,Rb,K,Na are the most reactive alkaline metals.
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∙ 8y agoNp
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14 properties of metals?
1. All metals lose electrons however gold can form aurides. 2. All metals conduct electricity. 3. All metals do metallic bonding. 4. All metals have free electrons. 5. All metals react with fluorine. 6. No metals are gases at RTP, there're either liquid (caesium, gallium, mercury) or solid. 7. Nearly all metals are shiney silver in colour except copper, gold and osmium. 8. All metals are at least fairly good conductors of heat. 9. All metals form atleast 1 compound soluble in water. 10. All metals have atleast 1 full s subshell This is way to broad of a question to possibly get 14, there are many different groups of metals the s block metals which are split into alkali and alkali earth metals, transition metals, poor metals, rare earth metals which are split into lanthanoids and actinoids.
What are the groups of elements called in the periodic table?
The groups of the periodic table are:Group 1: Alkali MetalsGroup 2: Alkali Earth MetalsGroup 3: BoronGroup 4: CarbonGroup 5: NitrogenGroup 6: OxygenGroup 7: HalogensGroup 8: Noble or Inert Gases
What is the difference between a nonmetal atom and an anion of the same element?
the number of electrons in the outer shell .. for metals its less than 4 .. for non metals its more than 4 .. for semi its 4
Difference between metals non metals?
There are a number of ways in which a metal can be differientiate a metal from a non-metals, these involve contrasting the properties between metals and non-metals and testing them to distinguish them from one another. Some contrasting properties between metals and non-metals: 1.) Metals conduct electricity whereas non-metals do not. 2.) Metals are shiny whereas non-metals are not. 3.) Metals are malleable whereas non-metals are brittle. 4.) Metals often have a higher boiling/melting point than non-metals. 4.) Metals are hard whereas non metals are not.
At least 8 physical properties of non-metals and metals?
1. Melting point 2. Boiling point 3. Hardness (not for gases and liquids) 4. Maleability (for metals) 5. Ductility (for metals) 6. Thermall expansion coefficient 7. Density 8. Color and appearance 9. Thermal conductibility 10. Electrical conductibility
Where is the most reactive metals are found in the Periods table?
The most reactive metal on the table is Caesium. Fluorine is the most reactive non-metal on the table. For metal periods, reactivity decreases from left to right. Non-metals are the opposite.
What are 4 divisions of elements on the periodic table?
The 4 divisions are Alkali Metals,Transitional Metals, Halogens,Noble Gases .
Are atoms with fewer electrons more reactive?
That isn't necessarily true. The Halogens (group 17) follow what you said, but the Alkali metals (group 1) don't. As you go down the column, the elements get more reactive for group 1; Lithium is the least reactive and Francium (speculated) is the most reactive. On the other hand, as you down the Halogens, they do get less reactive. Astatine (speculated) is the least reactive while Fluorine is the most reactive element of them all. Hope that clears up things!
What are the differences between alkali metals and transition metals?
1.Both are differ in valency shell electrons 2.I-A are monovalent and II-A are divalent 3.I-A is more reactive then the II-A group . 4.I-A have more electro positive character and II-A have less electro positive character than the I-A group . 5.I-A have less ionization energy and II-A have high ionization energy than the I-A . 6.I-A have very less electro negativity than the II-A group elements. 7.I-A is soluble in water and II-A is insoluble in water . 8.I-A metals are does not react directly with nitrogen but II-A react with nitrogen directly. 9.I-A group elements are strong reducing agents than the II-A group elements. 10.The oxidation values are differ. 11.I-A obtained in solid state but II-A group in solution state 12.Decomposes on heating I-A give only oxygen but II-A group liberates both oxygen and nitrogen . RGUKT IIIT NUZVID: N091528
What kind of elements has less than 4 valence electrons?
Boron group, transition metals, alkaline earth metals and alkali metals are listed in the Periodic Table are having less than four valence electrons
What are the major families in periodic table?
The basic famillies are - Group 1 the alkali metals. Group 2 the alkali earth metals Group 7 the halogens Group 0 or 8 (depending on your periodic table) are the noble gases.
What are the 5 main goups on the periodic table?
1) Alkali metals 2) Alkaline earth metals 3) Lanthanoids 4) Actinoids 5) Noble gases 6) Other non-metals and 7) Poor metals 8) Transition Metals
What are some facts about alkaline earth metals?
Alkaline Earth Metal found in second group of periodic table. The components are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). Below some characteristics of Alkaline Earth metals, 1. These metals have an oxidation number of +2 that makes them very reactive. 2. These elements are not freely in nature. 3. These elements are found on earth crust but not in their basic form. 4. they have couple of electrons in their outer most shell. 5. They are distributed in rock structures. 6. They have a high boiling and melting point. 7. they have low density, electron affinity and electromagnetic. 8. they are silver in color. 9. ductile and malleable. 10. Easily reactive with halogens and water.
How many valence electrons may metals have?
Different metals have different numbers of valence electrons. The alkali metals have 1. The alkaline-earth, transition, and inner transition metals have 2. Aluminum and those in its column have 3, tin and lead have 4.
The most reactive metal among the following is 1magnesium 2 potassium 3 silver 4 gold?
Potassium is most reactive.
What is a term used to describe an element with fewer than 4 electrons its outer shell?
represent a group of elements called metals. per novanet.
In the periodic table what are the collumns going up and down in the table called?
They are called groups, they go from 1 to 7 and then group 0 at the end. Some of the other names are: 1 - Alkali Metals 2 - Alkali Earth Metals 3 - 4 - 5 - 6 - 7 - Halides 0 - Nobel Gases
