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What has a high melting point and has a high boiling point and is moderately reactive and has two electrons in its outermost?
Wiki User
∙ 7y ago
I suppose that you think to beryllium.
Wiki User
∙ 7y ago
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What elements is hard and dense has a high melting point and boiling point is fairly reactive and has two electrons in its outermost orbit?
Strontium
How are elements in the last column of the periodic table simliar?
- All are gaseous- All have a low reactivity- All have the outermost shell of electrons completely filled- All have very low melting and boiling points- Excepting argon they are rare gases
Why are alkali metals and halogens the most reactive families?
Cesium and francium are the most reactive and lithium is the least. Because the reactivity of alkali metals increases going down the group. Down the group: atomic and ionic radii and density increase while melting and boiling points decrease. Therefore it is easy for them to lose the one electron on the outer orbital. So it is very reactive.
Which statement about alkali metals are correct?
Alkali metals belong to Group 1 of the periodic table. They are highly reactive and readily lose their outermost electron to form positive ions. Alkali metals have low melting and boiling points. They are soft and can be easily cut with a knife. Alkali metals include elements such as lithium, sodium, and potassium.
Two diatomic molecules with an equal number of electrons and a similar molecular weight are tested for boiling point the difference in boiling point is 150 degrees which is most likely?
the polar molecule has a higher boiling point
What elements is hard and dense has a high melting point and boiling point is fairly reactive and has two electrons in its outermost orbit?
Strontium
How are elements in the last column of the periodic table simliar?
- All are gaseous- All have a low reactivity- All have the outermost shell of electrons completely filled- All have very low melting and boiling points- Excepting argon they are rare gases
What effect does increasing the number of carbons have on the boiling point?
Increasing the number of carbons in a molecule increase the boiling point in the wast majority of cases.
Why are alkali metals and halogens the most reactive families?
Cesium and francium are the most reactive and lithium is the least. Because the reactivity of alkali metals increases going down the group. Down the group: atomic and ionic radii and density increase while melting and boiling points decrease. Therefore it is easy for them to lose the one electron on the outer orbital. So it is very reactive.
Which statement about alkali metals are correct?
Alkali metals belong to Group 1 of the periodic table. They are highly reactive and readily lose their outermost electron to form positive ions. Alkali metals have low melting and boiling points. They are soft and can be easily cut with a knife. Alkali metals include elements such as lithium, sodium, and potassium.
Two diatomic molecules with an equal number of electrons and a similar molecular weight are tested for boiling point the difference in boiling point is 150 degrees which is most likely?
the polar molecule has a higher boiling point
Why is Xenon's boiling point higher than Neon?
because Xenon has more polarizable electrons.
How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
Which would have a lower boiling point NO or O2?
O2 because it has more electrons. Because of the higher number of electrons, it has higher dispersion forces (attractive forces). This means that more energy (heat) is required to unstick the molecules into a different state of matter.
Does oxidation mean it turns something to gas?
No. Oxidation is when a substance is oxidised, i.e. loses electrons. Turning into a gas is called boiling.
What element has the highest melting and boiling points?
I am not entirely sure about wich one but it will be the one with the leaset electrons in it and a outer shell
What the properties of Noble gases?
Noble gases are the quiet ones, they are the least reactive on the Periodic Table. Noble gases have completely filled orbitals / energy levels. They generally have 8 valence electrons (helium has only 2 valence electrons). Helium and neon have filled valence shells. The noble gases have high ionization energies and stable electronic configuration, so they have little tendency to gain or lose electrons. Hence they are chemically inert and generally do not form compounds under normal conditions. The noble gases have low boiling points and are all monatomic gases at room temperature.
