- What is meant by ion?
- What happens to the reactivity as you go down Group 0?
- Do the melting and boiling points increase or decrease as you go down the group?
- Why do melting and boiling points increase down Group 7?
- What is a Gonosome?
- Does boiling point increase across a period?
- What alkali means?
- Why does the boiling point increase as you go down Group 0?
- How does the boiling point of noble gases change as you go down the group?
- What is Ishalogens?
- Why is group 0 so unreactive?
- Are group 0 elements Colourless?
- What happens to the reactivity of Group 7?
- What is the trend of melting and boiling points?
What is meant by ion?
an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion), which is created by an electron gain and is attracted to the anode..
What happens to the reactivity as you go down Group 0?
The group 0 elements are placed in the rightmost column of the periodic table. They are called the noble gases because they are all chemically unreactive (the term noble in chemistry signifies a lack of chemical reactivity). They are unreactive because their atoms have stable arrangements of electrons.
Do the melting and boiling points increase or decrease as you go down the group?
Trends in melting and boiling points Both the melting and boiling points decrease down the group. When any of the Group 1 metals is melted, the metallic bond is weakened enough for the atoms to move more freely, and is broken completely when the boiling point is reached.
Why do melting and boiling points increase down Group 7?
Melting and Boiling Points (increases down the group) The melting and boiling points increase down the group because of the van der Waals forces. The size of the molecules increases down the group. This increase in size means an increase in the strength of the van der Waals forces.
What is a Gonosome?
gonosome (plural gonosomes) (zoology) The reproductive zooids of a hydroid colony, collectively. A synonym for sex chromosome.
Does boiling point increase across a period?
The metallic structures Melting and boiling points increase across the three metals because of the increasing strength of their metallic bonds. The number of electrons which each atom can contribute to the delocalized “sea of electrons” increases.
What alkali means?
An alkali also can be defined as a base that dissolves in water. A solution of a soluble base has a pH greater than 7.0. The adjective alkaline is commonly, and alkalescent less often, used in English as a synonym for basic, especially for bases soluble in water.
Why does the boiling point increase as you go down Group 0?
Boiling points This is because, going down group 0: the atoms become larger. the intermolecular forces between the atoms become stronger. more energy is needed to overcome these forces.
How does the boiling point of noble gases change as you go down the group?
The boiling points of the noble gases increase as their atomic masses increase. The boiling points of the noble gases are very low compared to those of other substances with similar masses. … The dispersion forces increase as the size of the atom increases, so the boiling points also increase with atomic size.
What is Ishalogens?
A halogen is one of a group of chemical elements that includes chlorine, fluorine, and iodine. Halogens are often used in lighting and heating devices. … a halogen lamp.
Why is group 0 so unreactive?
The atoms of noble gases already have complete outer shells, so they have no tendency to lose, gain, or share electrons. This is why the noble gases are inert and do not take part in chemical reactions. … atoms of group 0 elements have complete outer shells (so they are unreactive)
Are group 0 elements Colourless?
The noble gases are colorless, odorless, tasteless, and nonflammable under standard conditions. They were once labeled group 0 in the periodic table because it was believed they had a valence of zero, meaning their atoms cannot combine with those of other elements to form compounds.
What happens to the reactivity of Group 7?
The reactivity of Group 7 elements decreases down the group. … The electrons in the outer shell move further away from the nucleus as we go down the group and the attraction force between the electrons and the nucleus become weaker and weaker. This weaker attraction in the larger atoms makes it harder to gain electron.
What is the trend of melting and boiling points?
Melting points and boiling points of Group 1 metals A trend can also been seen on descending a group. The melting and boiling points of the Group 1 elements decrease on descending the group. This is due to a decrease in the forces of attraction between the atoms.