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Describe why beryllium and calcium atoms both form ions with a charge of 2 plus?
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What is the number of calcium atoms in calcium chloride?
Calcium ions have a charge of +2 and chlorine ions have a charge of -1. Because a compound is neutral, you need two chlorine atoms per calcium atom, thus giving us the formula of CaCl2. This tells us that there is one calcium atom in the compound.
Is Beryllium a molecu?
Beryllium is an element with atoms, not a molecule.
Are beryllium atoms identical?
Each atom of an isotope of beryllium (or of another element) is different from the atoms of an other isotope. But all the atoms of an isotope are identical.
Which of these alkaline earth metal oxides has the greatest percent by mass oxygen 1 barium oxide 2 beryllium oxide 3 calcium oxide 4 magnesium oxide 5 strontium?
2. beryllium oxide. Each oxide contains as many oxygen atoms as alkaline earth metal atoms, and beryllium has the smallest atomic weight of the alkaline earth metals. Therefore, beryllium oxygen has the greatest percentage by weight of oxygen.
How does the number of atoms in one mole of beryllium compare with the number of atoms in one mole of magnesium?
There are the same number of atoms in one mole of beryllium as there are in one mole of magnesium :)
What is the overall charge of Beryllium atom?
The Beryllium atom , like all atoms has zero(0) charge. However, it is a Group (II) Alkaline Earth Metal and will form the cation Be^2+ . This has a charge of '+2'.
What is the cation of calcium oxide?
Calcium and Oxygen are the atoms in Calcium Oxide.
Most calcium atoms have an atomic number of 20 and a mass number of 40 but some calcium atoms have a mass number of 48 What word could you use to describe these two kinds of calcium atoms?
Isotopes.
What is the number of calcium atoms in calcium chloride?
Calcium ions have a charge of +2 and chlorine ions have a charge of -1. Because a compound is neutral, you need two chlorine atoms per calcium atom, thus giving us the formula of CaCl2. This tells us that there is one calcium atom in the compound.
What is the chemical formula of beryllium nitrite?
Be3N2 That is 3 beryllium atoms + 2 Nitrogen atoms
Is Beryllium a molecu?
Beryllium is an element with atoms, not a molecule.
What is the symbol and charge for calcium?
The symbol for calcium is Ca. Calcium atoms are neutral because they have 20 protons and 20 electrons. However when calcium atoms lose their 2 outershell electrons, it becomes a positively charged ion-Ca2+.
What has only 4 protons in its atoms?
An atom of beryllium.
Are beryllium atoms identical?
Each atom of an isotope of beryllium (or of another element) is different from the atoms of an other isotope. But all the atoms of an isotope are identical.
Which of these alkaline earth metal oxides has the greatest percent by mass oxygen 1 barium oxide 2 beryllium oxide 3 calcium oxide 4 magnesium oxide 5 strontium?
2. beryllium oxide. Each oxide contains as many oxygen atoms as alkaline earth metal atoms, and beryllium has the smallest atomic weight of the alkaline earth metals. Therefore, beryllium oxygen has the greatest percentage by weight of oxygen.
What is the number of atoms in calcium nitrate?
Calcium ions have a charge of +2 and nitrate ions (NO3) have a charge of -1. Because compounds are neutral, you need two nitrate ions to cancel out one calcium ion. Thus the formula for calcium nitrate is Ca(NO3)2. Nitrate has four atoms (one nitrogen and three oxygen). But there are two nitrate ions, so that makes eight atoms. Then you add on the one calcium atom for a total of nineatoms.
Which two atoms will have their outer energy level filled with 2 electrons?
There are more than two such atoms. Perhaps there was a list of atoms you had to chose from. Anyway, two such atoms are beryllium and magnesium.
