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Why was francium not in Mendeleev's periodic table?
In 1869 when D. Mendeleev designed his periodic table any element in the period 7 was known. Today francium is in the group 1, period 7, atomic number 87.
Which element would you expect to be located in group 1 of the periodic table?
Hydrogen, lithium, sodium, potassium, rubidium, cesium and francium are the elements located in group 1 of the periodic table.
Which element in 1a group is more reactivity?
Francium(Fr) is the most reactive element in Group 1A . The least reactive is Lithium(Li) The element become increasingly reactive 'down' Group 1A. NB You will NOT find francium in a school lab. for two reasons. 1. It explosive when in contact with water. 2. It is 'Radio-active' and radio-active matter has to be kept in special conditions.
What element in Group 1 has the largest atoms?
Cesium, which is in Group 1 of the periodic table, has the largest atoms. This is because as you move down a group, the atomic size generally increases due to the addition of more electron shells.
What are the proporties of Francium in Chemistry?
Frankium is an alkali metal, group 1. Its chemistry is assumed to be similar to the other members of the group. It is highly unstable radioactive element and its properties are not known- very little has been made.
The most reactive element in group 1?
Francium.
What element is most active in group 1?
Fr or Francium is the most reactive alkali metal (group 1)
What is the last member of this group all isotopes of this element are radioactive?
For example francium in the group 1.
What is the classification for the element francium?
Francium is an alkali metal, group 1 of the periodic table, radioactive, unstable, without uses now.
What period and group is francium in?
Francium is amrmber of the alkali metal familiy (group 1 in the Periodic Table of Mendeleev): Li, Na, K, Rb, Cs, Fr.
Why was francium not in Mendeleev's periodic table?
In 1869 when D. Mendeleev designed his periodic table any element in the period 7 was known. Today francium is in the group 1, period 7, atomic number 87.
What is the most metallic element after francium?
The most metallic element after francium is cesium. Cesium is located in Group 1 of the periodic table and has properties that are characteristic of metals, such as high electrical conductivity and metallic luster.
Is francium in period 7?
Yes, francium is in period 7 of the periodic table. It is the seventh element in that period.
Which group 1 element?
The group 1 of the periodic table of Mendeleev (alkali metals) contain: lithium, sodium, potassium, rubidium, caesium and francium.
What is the group number for francium?
Francium is in the group 1 (alkali metals) of the periodic table.
What is the group and period for francium?
Francium is in the period 7 and group 1 of the periodic table (alkali metals).
What is francium a compound or element?
Francium is a GROUP 1 metallic ELEMENT. It is a the bottom of Group 1 . Its partner elements in the Group are, lithium, sodium, potassium, rubidium, & caesium. They all react with water with increasing violence. to the point of explositivity. Francium is also Radio-Active, so you will not find it in any school lab. or even industrial labs. It is probably kept in a very special nuclear research lab. under very controlled conditions. It was discovered by Marie Curie, in France, hence its name.
