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What is the number of ions in Cu2O?
Three. Two copper +1 ions and one oxygen -2 ion
What is the mass number of most atoms of oxygen?
Oxygen is a non metal element. Atomic mass number of it is 16.
When metal corrodes the metal atoms lose what?
electrons
The metal atoms in aron are held together by?
If you think to the metal iron - a metallic bonding exist.
What type of atoms does an ionic bond occurs between?
A metal and a non-metal
How many non metal atoms are in Cu2O?
Just one in every molecule, oxygen
How does the number of separate electrons shown for the group 2 metal atoms compare to the number of atoms?
The number of electrons in a neutral atom is equal to the atomic number.
When oxygen changes metals like copper and iron it makes?
An oxide of that metal. Depending on how many atoms fo each mix, you will get different oxides. For example, copper and oxygen can form cuprous oxide (Cu2O) or cupric oxide (CuO)
A bracelet containing 0.200 mol metal atoms is 75 percent gold How many particles of gold atoms are in the bracelet?
Using Avogadro's number, 0.200 moles contains 1.2044 E23 atoms of metal. 75 percent of this number is equal to 9.033 E22 atoms of gold.
What is the oxidation number of hydrogeon when it is combined with a metal?
Hydrogen is a non metal. Metals are electropositive than hydrogen. Therefore, hydrogen atoms in metal hydrides have oxidation number -1.
What is the chemical name of Cu2O?
NOT +2Added:In Cu2O the ion charge is Cu1+, (cuprous oxide, Cu(I) oxide, oxidation state +1) color brownish red (or yellow, depending on how fine the particles are) In CuO the ion charge is Cu2+, (cuprous oxide, Cu(II) oxide, oxidation state +2) color black
What is the number of ions in Cu2O?
Three. Two copper +1 ions and one oxygen -2 ion
What is the mass number of most atoms of oxygen?
Oxygen is a non metal element. Atomic mass number of it is 16.
How do you tell if a bond is covalent?
if it occurs between non metal atoms. Covalent bonds can only occur between non metal atoms but Ionic bonds occur between metal and non metal atoms.
Are small atoms more likely to be metal or non metal?
metal
When metal corrodes the metal atoms lose what?
electrons
What does it mean when something is referred to as a heavier element?
A heavy element is an element that based on the amount of metal that is in the element. Some can base the description of a heavier metal on the number of atoms but it is the amount of metal in the element.
