How many protons, neutrons and electrons does Be2+ have?

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Asked by Marshallje, Last updated: Dec 18, 2024

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5 Answers

E.Evelyn

Answered Dec 14, 2020

Be2+ is the chemical name for the Beryllium ion.
Beryllium has 4 protons and 2 electrons. Beryllium, in its natural form, has an electronic configuration of 1s2 2s2. Beryllium has an atomic number of 4 and is located in group 2 of the periodic table, which is also known as the alkaline earth metal group. It is located in period 2; it is very strong and was found and documented in a book published by Pliny the Elder in the first century.

Beryllium comes in a dark gray color. The mass number of Beryllium is the number of protons + number of neutrons. Proton for beryllium is 4 while that of the neutron is 5, which makes the mass 9. The molecular weight is 9.012183 g/mol.

J.Spencer, Knowledge enthusiast, Tokyo

Answered Sep 24, 2018

Beryllium has an electronic configuration of 1s2 2s2 in its natural state. When in an ion state of Be2+ it loses the electrons in a 2s shell and has a configuration of 1s2.

This means that Be2+ has 2 electrons. The amount of protons and neutrons remains the same at 4.

Therefore, Beryllium will have four protons, four neutrons, and two electrons.

C.Dorothy

Answered Dec 08, 2017

Be2+ stands for Beryllium ion. The element Beryllium has an atomic number of 4. Also, Beryllium is located in group 2 which is the alkaline earth metals. It is also located in period 2. Beryllium is a dark gray color and it is strong. Beryllium 2+ has four protons, 3 neutron and 2 electrons in it. The first time beryl or beryllium was documented was in a book written by Pliny the Elder during the first century.

John Adney

This answer is incorrect! Wow, its crazy that an educator site such as proprofs.com
would have the gall to call themselves professors, or professionals at that! Dont be fooled by this websites asinine answers, they are all wrong, misleading, and probably serve under the unholy wrath of c'thulu. btw, the correct answer 4,4,2. :)