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Beryllium is in group 2 and has two valence electrons which can readily be removed by Fluorine to form BeF2

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Q: Why do beryllium and fluorine combine in a 2 and 1 ratio?
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What other elements can beryllium combine with?

Beryllium (Be) will combine in a 1-1 ratio with elements from group 16. It will combine in a 1-2 ratio with elements from group 17 (the halogens.) It will combine in a 3-2 ratio with elements from group 15. Examples: beryllium oxide - BeO; beryllium chloride - BeCl2; beryllium nitride - Be3N2.


How many atoms of fluorine will combine with 1 atom of aluminum in a compound?

3 Fluorine atoms are required for 1 aluminum atom.


Chemical formula for lithum flouride?

LiF lithium is +1 and fluorine is -1, so they combine 1 to 1


How much fluorine in grams was formed when the mass ratio of sodium to fluorine in sodium fluoride is 1 to 21 to 1 A sample of sodium fluoride produced 27point7 grams of sodium upon decomposition?

How do you find the mass ratio. And how many grams fluorine is made at decomposition.


When magnesium Mg2 plus and fluorine F1- combine in an ionic bond the resulting formula will be?

MgF2 Mg +F2 -> MgF2 MgF2 is ionic- it consists of Mg2+ and F- ions in a 1: 2 ratio.


Is the chemical ratio of carbon to chlorine to fluorine 2 to 1 to 2 in CCI2F2?

No.


How many atoms of Lithium and Fluorine are needed to create the total charge of zero?

A Lithium ion has a charge of 1+ and a Fluoride ion has a charge of 1-, so Lithium and Fluorine pair in a 1:1 ratio.


What is one mole of freon CCl2F2 the chemical ratio of carbon to chloride to fluorine is 2 1 2?

False


What is one mole of freon CCl2F2 the chemical ratio of carbon to chloride to fluorine is 2-1-2?

its False


What are 9 elements?

1.hydrogen 2.helium 3.lithium 4.beryllium 5.boron 6.carbon 7.nitrogen 8.oxygen 9.fluorine


What is the valency of fluorine?

The valency of fluorine is -1.


What does the oxidation number of an element tell you?

The oxidation number tells you the "combining power" of that element. For example, if Cu has a 1+ oxidation number then it will combine with Cl in a 1:1 ratio, and result in CuCl. If Cu has an oxidation number of 2+, then it will combine with Cl in a 1:2 ratio, and result in CuCl2.