Which three elements are most likely to have similar chemical and physical properties?
Elements present in the same group of the periodic table have similar physical and chemical properties. Therefore of all the given triplets, only Sodium, Potassium and Rubidium have similar physical and chemical properties.
Sodium and potassium share similar physical and chemical properties because they are in the same family or group called Alkali metals. Both will have the same valence electrons and they are both very reactive.
As pictured below, notice how the elements lithium (Li), sodium (Na), and potassium (K) all look alike. They are all soft, silver metals. Since Li, Na, and K are all Group 1A metals, they all share similar chemical properties.
The ones "most" similar would be the ones closest in mass as well. Those would be Lithium (Li) and Potassium (K). Of those, I would consider Lithium to be "closest" as it shares the higher reactivity with sodium compared to the heavier elements in the Group.
Answer and Explanation:
These two elements belong to the same group and have the same number of valence electrons. For this reason, Ca and Sr will exhibit the greatest similarities in chemical and physical properties.
The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
Each element within a group has similar physical or chemical properties because of its atom's outermost electron shell (most chemical properties are dominated by the orbital location of the outermost electron).
Element having atomic number 35 is bromine. Both chlorine and bromine lies in the same group therefore they have similar properties.
Step 1. Elements with similar properties are organized in groups of the periodic table. Cl and Ar are not in the same group, Ar is a noble gas and is very inert unlike Cl. Li and Na are in the same group and have very similar properties.
Why do the elements potassium and sodium have similar chemical properties? The elements potassium and sodium have similar chemical properties because they have the same number of valence electrons and form +1 ions.
What are the chemical and physical properties of sodium?
It's a soft metal, reactive and with a low melting point, with a relative density of 0,97 at 20ºC (68ºF). From the commercial point of view, sodium is the most important of all the alkaline metals. Sodium reacts quickly with water, and also with snow and ice, to produce sodium hydroxide and hydrogen.
Magnesium and calcium have similar chemical properties because they have the same number of electrons in their valence shells.
Both chlorine and bromine lies in the same group therefore they have similar properties.
For example, pairs lithium (Li) and magnesium (Mg), beryllium (Be) and aluminium (Al), boron (B) and silicon (Si), etc are exhibiting similar properties. Boron and Silicon are both semiconductors. Thus Magnesium and Lithium have similar properties.
Which two of the following elements would you expect to show the greatest similarity in chemical and physical properties: B, Ca, F, He, Mg, P? Elements that are in the same group of the periodic table are most likely to exhibit similar chemical and physical properties.
Examples of chemical properties include flammability, toxicity, acidity, reactivity (many types), and heat of combustion. Iron, for example, combines with oxygen in the presence of water to form rust; chromium does not oxidize (Figure 3).
- Density.
- Melting point.
- Boiling point.
- Hardness.
- Electrical conductivity.
| Physical property | Chemical property |
|---|---|
| Chemical identity remains the same | Chemical identity changes |
| Structure of material does not change | Structure of material changes |
| No chemical reaction is needed to show the property | Chemical reaction is needed to show property |
The elements are arranged in order of increasing atomic number. The periodic table is also arranged by groups and periods. The elements in a group have the same number of electrons in their outermost orbital. The elements in a period have the same number of electron shells.
Fluorine and bromine have properties similar to those of chlorine.
Why do chlorine and bromine have similar properties?
Solution : Chlorine and bromine are in the same group i.e., Group VIIA of the Periodic Table. Chlorine and bromne have seven valence electrons each. Since both have the same number of valence electrons, they have similar chemical properties.
fluorine (F) and bromine (Br). I know chlorine, fluorine, and bromine have similar characteristics because they belong to the same group or column in the periodic table; these elements belong to the halogen family.
The elements potassium and sodium have similar chemical properties because they have the same number of valence electrons (1).
Properties of Group 2 Elements
This group includes beryllium, magnesium, calcium, strontium, barium, and radium. Being in group 2 means they all have two valence electrons, or the electrons that are furthest away from the nucleus. These valence electrons are typically the electrons involved in reactions.
Atoms of group 1 elements all have one electron in their outer shell. This means that the alkali metals all have similar chemical properties .
So, the elements with similar properties to sodium (Na) are all of those elements in the same Group. The ones "most" similar would be the ones closest in mass as well. Among Li and K, the mass of sodium is closest to Li. Hence, Lithium has the most similar properties to sodium.
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Group 1.
| Element | Melting point (°C) |
|---|---|
| Lithium, Li | 180 |
| Sodium, Na | 98 |
| Potassium, K | 63 |
| Rubidium, Rb | 39 |
- Symbol: Na.
- Melting point: 97.794°C.
- Boiling point: 882.940°C.
- Density (g cm−3): 0.97.
- Atomic mass: 22.990.
- Atomic number: 11.
- Electronegativity (Pauling Scale): 0.93.
- Classification: Alkali metal, Group I metal.
Alkaline Earth Metals
They are both soft, silver-colored metals that react quickly with halogen gases such as fluorine, chlorine and bromine to form salts. Both react with water to form strong basic solutions with a pH greater than 7.
Soluble in water (35.6g/100g at 0°C and 39.2g/100g at 100°). Slightly soluble in alcohol, but insoluble in concentrated hydrochloric acid. Melts at 801°C and begins to vaporize at temperatures just slightly above this boiling point 1,413°C. Hardness of 2.5 on the MOH scale of hardness.
Why calcium and strontium have similar chemical properties?
Solution : The similar properties between calcium, strontium and potassium are : <br> All of them have two electrons in the outermost shell.
Beryllium, Calcium and Magnesium are three of the six elements that fall into this category. The outer electronic structure of all these elements is similar due to which they all have similarity in their chemical and physical properties. They are all shiny, though fairly soft but still harder than alkali metals.
Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.
Explanation: Well, it's Group 15. The mnemonic for this Group is, no passers by , i.e. nitrogen, phosphorus, arsenic, antimony, bismuth .
oxygen, sulfur, selenium, tellurium, polonium.. ...it have SIX valence electrons, and the element can be reduced to form sulfide ion S2− ....
Silicon is the closest element to carbon in the group, so they have the most similar properties.
Terms in this set (83) Which substance can be decomposed by chemical change? The elements sodium and lithium have similar chemical properties because they both have the same...
Both Sodium and Magnesium have third electron shell 3s as their outermost valence electrons, therefore they are in the same period. This period corresponds to the accumulation of electrons in the third (n = 3) shell, especially its 3s and 3p subshells, in a quantum mechanical explanation of atomic structure.
What Makes Them Similar? When you look at our descriptions of the elements fluorine and chlorine, you will see that they both have seven electrons in their outer shell. That seven-electron trait applies to all of the halogens. They are all just one electron shy of having full shells.
These elements are known as alkali metals.
Which element would have physical and chemical properties similar to chlorine?
Both chlorine and bromine lies in the same group therefore they have similar properties.
oxygen, sulfur, selenium, tellurium, polonium.. ...it have SIX valence electrons, and the element can be reduced to form sulfide ion S2− ....
Germanium (Ge) has properties that are most like those of silicon (Si).
All the group 3 elements are rather soft, silvery-white metals, although their hardness increases with atomic number. They quickly tarnish in air and react with water, though their reactivity is masked by the formation of an oxide layer.
low density (mass over volume) low melting points (except beryllium) low boiling points (except beryllium) soft and strong in their metal states.
Group one elements share common characteristics. They are all soft, silver metals. Due to their low ionization energy, these metals have low melting points and are highly reactive. The reactivity of this family increases as you move down the table.
Fluorine and bromine have properties similar to those of chlorine.
Solution : Chlorine and bromine are in the same group i.e., Group VIIA of the Periodic Table. Chlorine and bromne have seven valence electrons each. Since both have the same number of valence electrons, they have similar chemical properties.
fluorine (F) and bromine (Br). I know chlorine, fluorine, and bromine have similar characteristics because they belong to the same group or column in the periodic table; these elements belong to the halogen family.