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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?
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∙ 8y ago
Strontium
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∙ 8y ago
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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?
I suppose that you think to beryllium.
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
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.
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.
What elements has a low melting point and boiling point exists as a diatomic molecule in the gas phase has seven valence electrons and readily reacts with metals to produce a salt?
bromine
What has a high melting point and has a high boiling point and is moderately reactive and has two electrons in its outermost?
I suppose that you think to beryllium.
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
Physical properties of s-block elements?
S-block elements are silvery white, lustrous, highly malleable, having low density, low boiling and melting points, good conductors of heat and electricity . They are highly reactive metals and their reactivity increases down the group.
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.
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.
Why elements of the same shape have different boiling points?
elements of same shape have different boiling points because their bonding may vary! the elements with covalent bonds will have high boiling point!
How reactive is tungsten the element?
Tungsten is very inert compared to most elements. This gives it the high boiling point that makes it suitable for applications like making water heater coils and bulb filaments.
What elements have a low melting point and boiling point exists as a diatomic molecule in the gas phase has seven valence electrons and readily reacts with metals to produce a salt?
bromine
What elements has a low melting point and boiling point exists as a diatomic molecule in the gas phase has seven valence electrons and readily reacts with metals to produce a salt?
bromine
Are the elements in each period alike in properties?
Yes. The elements in a period in a periodic table are categorised by how many outershells are surrounding the neutron and proton nucleus. They are alike in properties because the amount of electrons relates directly to how many outer shells the element has, for exampe Magnesium will have 3 outer shells because it has 12 electrons (2, 8, 2). The more shells an element has, the stronger the formation is and the higher the melting and boiling point will be. Therefore elements in the same period will have similar melting and boiling points.
Do elements compounds and mixtures have fix melting and boiling point?
Yes, elements have fixed melting points; but some exceptions are with the elements having allotropes (as carbon, sulfur, phosphorous, etc.) - each allotrope has a specific melting point.
Which elements have a low melting and boiling point and exists as gas at room temperature have seven valence electrons and readily reacts with metals to produce a salt?
Fluorine and Chlorine would fit this description.
