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55 is the atomic number of the element caesium

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11y ago

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How many elements when mendeleeve made his periodic table?

I believe there were 55 or 56 known elements then.


What is periodic table number 55?

Cesium. See the link below for a periodic table


What is the name for the 55 element on the periodick table?

The element with atomic number 55 on the periodic table is cesium.


What group does cesium belong to?

Caesium (Ce) is atomic number 55 of the Periodic Table of the Elements. Ce belongs to Group I and is 132.9 grams per mole.


Which element in the row 6 of the periodic table has the largest radious?

Caesium (At no. 55).


What are the answers to the Lab 7.2 periodic puzzle?

For information about the 7.2 Periodic Puzzle: -pg 55 Table 1: The Mystery Elements: - refer to this link: http://www.glencoe.com/mhlnob/assets/00077001/pdf/00077415.pdf -pg T230


Period 5 in the periodic table?

Period 5 in the periodic table includes elements from 37 (Rb) to 55 (Cs). This period consists of transition metals, lanthanides, and actinides, as well as nonmetals and metalloids like iodine and tellurium. Elements in period 5 generally have increasing atomic numbers and atomic masses from left to right.


Mn is what on the periodic table?

55 - No. of protons and neutrons Manganese 25 - No. of protons


Where is cesium on the periodic table?

Cesium is in period 6, group 1. Its atomic number is 55. Its symbol is Cs.


What part of the periodic table is cesium?

Cesium is a chemical element located in Group 1 and Period 6 of the periodic table. It is an alkali metal with the symbol Cs and atomic number 55.


What has 55 electrons?

The element with 55 electrons is Caesium (Cs). Caesium is an Alkali Metal in Period 6 of the Periodic Table. It has the atomic number 55. It has 55 electrons in 6 shells with 1 electron in the outer shell.


Which element in Period 5 of the Periodic Table is a transition element?

Vanadium Niobium Tantalum