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What would be the formula if element a with a valence number of 3 and element b with the valence number of 2 combined what subscript number will be given to element b?
Wiki User
∙ 14y ago
The resultant formula will be a2b3 for elements a and b with the cited valences. The element b will have the subscript 3ascribed to it. Recall that to combine, atoms are counted in "whole number" amounts. One can have an atom, or two atoms, but not half an atom (naturally). And when combining atoms, the "plus" valences and the "minus" valences must be equal (or must "cancel out" as some might like to view it). As a has +3 and b has -2 valence respectively, we need to find the smallest whole number that can be made by both 3 and 2. That number is 6. And to make the 6, it takes 2 of the 3-valence atoms and 3 or the 2-valence atoms. Our atoms will combine in a 2:3 ratio. And example of a molecule like this is iron oxide in the form of iron ore. Most iron ore we mine occurs in the form of Fe2O3 and is a sorta black stuff. Note that iron has more than one oxidation state, and it can combine with oxygen in more than the one ratio. Common rust is Fe3O2 and is the red stuff that we see as the result of the weathering and break down of iron and (non-stainless) steel.
Wiki User
∙ 16y ago
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Structure model of hydrogen gas?
H2 (the two should be a small subscript) - Hydrogen GasH - H (two hydrogens bonded together with a single bond between them), since hydrogen atom/element only has one valence electron to share with the other atom/element.
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There are 8 valence electrons for neon.
What is the number of valence electrons the element chlorine?
7
What element is stable with 2 valence electrons?
calcium
How many valence electrons does chlorine have?
The element chlorine has seven electrons in its valence shell.
If element A has a valance number of 3 and element B has a valence number of 2 If you combine them both what formula for the resulting compound be of subscript number of element B?
The chemical formula will be A2B3.
What is the formula beryllium Nitride?
The formula for beryllium nitrate is Be(NO3)2.
How many valence electrons should an element to react with a element with 7 valence electrons?
one valence electron
Element 3 lithium has one valence electron and element 4 beryllium has two valence electrons Element 5 boron has how many valence electrons?
Boron has 3 valence electrons.Boron has 3 valence electrons.
Is the element reactive or satble how do you know?
If the element has a full valence shell, such as the noble gases, then it is unreactive. It the element is missing few valence electrons of has few valence electrons, then the element is very reactive, such as the sodium.
What type of properties do valence elcectrons determine for an element?
Valence electrons determine the reactivity of the element.
Structure model of hydrogen gas?
H2 (the two should be a small subscript) - Hydrogen GasH - H (two hydrogens bonded together with a single bond between them), since hydrogen atom/element only has one valence electron to share with the other atom/element.
Why is so much emphasis placed on valence electrons?
The valence electrons of an element are mainly what determine an element's properties.
What is the expected number of valence electrons for a group 3 A element?
The expected number of valence electrons for a group 3 A element is 5 number of valence electrons.
What do Valence Electrons determine?
The Group Number of the Element you're working on determines the number of Valence Electrons. Valence electrons are electrons in the outside energy level.
How many valence in the element cobalt?
There are 2 valence electrons in cobalt.
How can you tell whether or not an element will react with others element?
Depending on how many valence electrons in the element has, The other element could take away a valence electron to make eight
