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Why does the reactivity of the alkali metals increase with increasing atomic number?
Wiki User
∙ 14y ago
Alkali metals react by losing the single electron that is in their outer shell. For higher atomic numbers, that shell is farther from the positively-charged nucleus, so electric force on the electron is less. Atoms with higher atomic numbers also have more protons, so you might expect them to attract an electron with a stronger force, but the extra protons are balanced by extra electrons. The net charge attracting the electron is still the same as that of one proton.
Less energy is required to separate the outer-shell electron from the atom and cause it to react.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agothe energy levels are further and further from the positive pull of the nucleus, so the electrons expand outward
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What happens to the chemical reactivity of alkali metals as you increase atomic numbers?
The chemical reactivity of alkali metals increase when the atomic number increase.
Describe the Reactivity of group 1 element varies with increasing atomic number?
describe how the reactivity of group1 elements and group 7 elements varies with increasing atomic number
Why melting point decrease down the group for Alkali metals but increase for Halogens?
Because the atomic radius increases down the group 1 and decreases down the group of halogen
What happens to the reactivity of halogens as you go down the group?
the reactivity of halogens goes on decreasing as we go down the group, because of increasing in atomic size of the respective element.
How does atomic mass indicated element reactivity?
There is no good correlation lies between the element reactivity and the atomic mass.
What happens to the chemical reactivity of alkali metals as you increase atomic numbers?
The chemical reactivity of alkali metals increase when the atomic number increase.
What is the reactivity for the halogens?
The reactivity of halogens decreases with increasing atomic number.
Describe the Reactivity of group 1 element varies with increasing atomic number?
describe how the reactivity of group1 elements and group 7 elements varies with increasing atomic number
How can the Boer model of atomic structure be used to explain the reactivity of the alkali metals?
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Why melting point decrease down the group for Alkali metals but increase for Halogens?
Because the atomic radius increases down the group 1 and decreases down the group of halogen
Which property of alkaline earth metal increases with increase in their atomic numbers?
reactivity
What 4 alkali metals are the most reactive?
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.
What happens to the reactivity as you move down group 1 in the periodic table?
Reactivity in group 1 of elements increases as we go down the group (to francium) because in the alkali metals as we go down the group number of atomic shells increases so the elements with most shells will easily release their electrons in the outer most shell.
What happens to the reactivity of halogens as you go down the group?
the reactivity of halogens goes on decreasing as we go down the group, because of increasing in atomic size of the respective element.
What happens to the reactivity of elements in group a as atomic number increase across a period?
they do becaused they want to do it
What is the process that results in the increase of atomic number?
The number of energy levels increase within a group. Therefor the atomic radius increases. So the atomic volume also increases.The atomic radius also increases in a group.For metals, reactivity increases down the group. For non-metals, reactivity decreases down a group.
As the elements in Group 17 are considered in order of increasing atomic number the chemical reactivity of each successive element decreases increases or remains the same?
The chemical reactivity decreases in group 17 as you go down the group.
