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Protactinium, with the chemical symbol Pa, is the chemical element with the atomic number 91.

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Which element in the actinide series has the greatest atomic number?

Lawrencium (Lr) with the atomic number 103.


Chemical symbol for protactinium?

The chemical symbol of protactinium is Pa.


What is the atomic radius of protactinium?

The atomic radius of protactinium is 180 pm.


How many neutron and protons are in protactinium?

Protactinium has 91 electrons; the valence is 4 or 5.


What is the atomic number for pf?

The atomic number for the element Protactinium (Pf) is 91.


When thorium emits beta particle the resulting nucleus has a atomic number?

The resulting element is protactinium, atomic number 91.


What is the mass of one atom in protactinium?

The atomic weight of protactinium is 231,03588.


What is the atomic weight of protactinium?

ProtactimAtomic Number: 91Atomic Weigt: 231.0Symbol: Pa


How many electrons and protons does protactinium have?

Protactinium has 91 protons and electrons; the number of neutrons is different for each isotope: Number of neutrons = Atomic Mass of the isotope - 91


What is the name of the element with the atomic numer91?

The element with atomic number of 91 is protactinium, Pa. It is an inner transition metal.


Is protactinium a metal?

Because the properties (chemical and physical) of protactinium are the general properties of metals.


Atom of thorium loses 2 protons what element is left?

If an atom of thorium loses 2 protons, it would turn into an atom of protactinium. Thorium has an atomic number of 90, so losing 2 protons would change it to an atomic number of 88, which is protactinium.