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

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When uranium 238 changes into protactinium 234 how many protons does it lose?

Uranium-234 become protactinium by emission of a beta particle. A proton is transformed in a neutron.


Chemistry how many protons does a protactinium has?

Protactinium has 91 protons.


What is the proton number of protactinium?

Protactinium has 91 protons.


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


How many protons neutron and electrons in mercury?

121


How many protons neutron andelectrons are in selenium?

around 30


How many neutron are there in the lithium ion that has 3 protons?

2


How many protons and how many neutrons in the nucleus of a helium 4 atom?

2 protons and 2 neutron


How many protons and electrons does a neutron have?

None. Protons and electrons are not constituents of a neutron. Both neutrons and protons are constituents of an atom's nucleus (core), while the electrons are situated in the electronic cloud around the nucleus.


How many protons neutrons and electrons are there in 3He?

3He has 2 protons, 1 neutron, and 2 electrons.


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.


How many protons and neutron are in argon-38?

18 protons and 20 neutrons