They only need to lose one electron to obtain noble gas configuration and thus it is extremely energetically favorable for them to do this. Rubidium, potassium, sodium and lithium also only need one electron removing. With cesium and francium however, the atoms are much larger making the outer electron much further from the positive nucleus and also shielded by lot more electrons. This makes it extremely easy to remove and thus they are both highly reactive.
Because caesium and francium are alkali metals, the last two in the first group of the Periodic Table of Mendeleev.
caesium is larger because of its electrons it has while magnesium has less
Caesium has a smaller one - as it is above francium so it has one less outer shell of electrons
Not correct; the covalent radius of francium is 260 pm and the covalent radius of caesium is 244 pm.
The chemical reactions of francium are probably similar to the reactions of caesium or rubidium.
Francium is similar to caesium.
The chemistry of francium is not experimentally known; it is only estimated. Francium should be have properties similar to caesium.
Any element in the alkali metal group would have similar chemical properties, for example they all react easily to water.
Lithium has similar properties with anything in Group 1 on the periodic table.
The chemistry of francium is not known; francium has properties similar to caesium.
The chemical reactions of francium are probably similar to the reactions of caesium or rubidium.
Francium is a true chemical element, not an example.
The chemistry of francium is not experimentally known; it is only estimated. Francium should be have properties similar to caesium.
Francium is similar to caesium.
The chemistry of francium is not experimentally known; it is only estimated. Francium should be have properties similar to caesium.
The chemistry of francium is not known; it it supposed to be similar to caesium.
Estimated properties of francium - Melting point: 27 0C - Boiling point: 677 0C - Density: 1,87 g/cm3 - Heat of fusion: 2 kJ/mol - Heat of vaporization: 65 kJ/mol - Ionization energy: 380 kJ/mol - Atomic covalent radius: 260 pm - Thermal conductivity: 15 W/m.K - Electrical resitivity: 3 microohm.m - Crystalline structure: body centered cubic - Paramagnetic Chemically francium is similar to caesium.
The predictions are based on the supposition that francium is similar to caesium.
Only caesium has the same properties as caesium. There are other elements which have some similar properties.
have the same number of valence electrons, need the same number of electrons to fill their valence shells
Francium is an alkali metal, similar to caesium. Water (H2O) is a compound,not an element. Francium, although it is believed to have never been tested, is thought to have been the most reactive element with water. It is among the alkali metals in group 1 on the periodic table of elements.