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What is the name of CrS?
Chromium (ii) sulfide
How many valence electrons do the elements is group two have?
Group II elements (also called alkaline earth metals), have two valence electrons. To fill their outer shell, they therefore become ions with two positive charges, such as magnesium: Mg -> 2e- + Mg2+
What are the metals called in groups 3 through 12?
They are called the transition metals. They sometimes have multiple valence states, which makes predicting how they react tricky. Often their symbol is accompanied by a Roman numeral, which simply tells you their number of valence electrons. For example, Cu(II) means copper with 2 valence electrons.
The name for the compound with the formula Cr2O3 would be written as what?
Cr2O3 is the chemical formula for chromium (III) oxide
What element has two valence electons?
Here at Afuelscience.com we use this method...the number of valence electrons is the number of s and p electrons in the outermost shell (highest n). The number of valence electrons can also be determined by counting across the period, skipping the transition metals, until the element is reached. It is also the group number. If there is more than one atom, the number of valence electrons is the sum of all the atoms in the molecule or polyatomic ion. For ions, add the value of a negative charge and subtract the value of a positive charge. >> Example 1 How many valence electrons are in the following? # N # H2S # CO32- # NH4+ Solution: # Nitrogen is in group 5A. It has five valence electrons. # Hydrogen has one valence electron, and sulfur has six. The total for the molecule is 2(1) + 6 = 8. # Carbon has four valence electrons; oxygen has six; then two for the charge. 4 + 3(6) + 2 = 24. # Nitrogen has five valence electrons; hydrogen has one, minus one for the charge. 5 + 4(1) - 1 = 8.
What is the name of the compound CrS?
Chromium (ii) sulfide is CrS. The ii indicates that chromium can take on different valence characteristics, here sharing two electrons with the sulphur atom. The same elements can also make a different mineral compound, Cr2S3 where Chromium atoms share 3 electrons instead of two.
What is the name of the compound CrO?
It is called chromium(II) oxide.See the Web Links for more information.
Lewis structure for Cr?
The Lewis structure for Cr (chromium) has a total of 24 valence electrons. It will have 6 single bonds with other atoms to satisfy the octet rule, with the remaining 10 electrons as lone pairs on the central chromium atom to complete its octet.
Is CrN cation a chromium II or III?
The CrN cation is typically a chromium(III) cation, where chromium has a +3 oxidation state. This means that chromium has lost three electrons and has a charge of +3.
How many protons and electrons are there in the Chromium VI?
Chromium is a transition metal and his varying valences and properties compared to normal non transition metals. All elements of the same type have the same number of protons, its what makes them their particular element. So chromium isotopes, allotropes etc will always have 24 protons. Electrons though im not sure i know that in say iron (II) and iron (III) it means that iron has a valence of 2 and 3 and hence an ionic charge of of 2+ and 3+ when it gives up the outer shell electrons corresponding with the roman numeral. im pretty sure that chromium VI means it has 6 electrons in its outermost valence shell. which is weird for a metal though as they usually don't have more than 4 electrons in their outer shell so im not sure. hopefully that's helpful.
What is the correct formula for Chromium II Carbide?
The correct formula for Chromium (II) Carbide is Cr2C. This is because Carbon (or Carbide) has a negative 4 charge because it wants to gain four electrons to have it's valence electrons to equal 8. So if it gains four electrons, and electrons are negatively charged, then it has a negative four charge. Chromium has a positive two charge because it has the roman numeral II next to it. Chromium is a metal and all metals are positively charged when they become ions, so it has a positive two charge. In order to be a stable compound, the charges must cancel each other out. So in order for that to happen, you must have two Chromium atoms, to make a positive four charge in total, and one Carbon, to make a total of negative four. And since positive four and negative four cancel each other out, then the formula is Cr2C (two Chromium and one Carbon atom).
How many electrons of a calcium are involved in chemical bonding?
Calcium is in group II of the periodic table meaning that it has 2 valence electrons. These are the electrons that are involved in making a chemical bond, so the answer to your question is TWO.
What is the symbol for the chromium(II) ion?
Cr^+2 is the symbol for the Chromium(II) ion
What is the formula of Chromium (II) oxide?
The formula of Chromium (II) oxide is CrO.
What is the group of elements with the same number of valence electrons?
Elements in the same group on the periodic table have the same number of valence electrons. Valence electrons are the electrons in the outermost energy level of an atom and determine an element's chemical properties.
What is the name of CrS?
Chromium (ii) sulfide
What is the name of the ionic compound CrF2?
Chromium II fluoride
