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When do you use roman numerals in an element?
we usually use roman numerals in writing names of compounds of transitional elements which have more than one valency . for example we have two compounds of iron chloride , iron(II)chloride and iron(III)chloride depending on the valency of iron in each compound.
Can a hexagon have more than 8 sides?
No. A hexagon can only have six sides. No more, no less.
Is 657 is 28 more than 685?
Yes, only if you mean 685 is 28 more than 657 because 657+28 = 685
A number having more than 2 factors?
A number that has only two factors is prime. A number that has more than two factors is composite.
Why is 100 a composite number?
Because it has more than two factors whereas a prime number has only two factorsBecause it has more than two factors.
Why does periodic table show phosphate having valency of 5 yet it is really valency 3?
You have mistaken Phosphate for Phosphorus. Phosphorus is in Group 5 of the periodic table. Group 5 elements generally have a valency of 3, but it is also possible for them to have a valency of 5... Below are two examples of compounds, one using Phosphorus with valency 5 (V) and one using Phosphorus valency 3 (III) : Phosphate (phosphorus with maximum oxygen) This is formed by Phosphorus (V) + 4 Oxygen. Oxygen has valency -2, thus... 5 + 4 x -2 = 5 - 8 = -3 So we can see that Phosphate has a charge of -3 (or in other words a valency of 3) Phosphite (phosphorus with one less than maximum oxygen) This is formed by Phosphorus (III) + 3 Oxygen, and so... 3 + 3 x -2 = 3 - 6 = -3 So we can see that Phosphite also has a valency of 3 Hope this helps!
Can an element have more than one valency?
yes
Is phosphorus more electronegative than sodium?
Yes, phosphorus is more electronegative than sodium. Phosphorus has an electronegativity of 2.19 on the Pauling scale, while sodium has an electronegativity of 0.93.
Which bond is more polar a phosphorus fcholrine bond or a phosphorus fluorine bond?
A phosphorus-fluorine bond is more polar than a phosphorus-chlorine bond. Fluorine is more electronegative than chlorine, so it withdraws electrons more strongly in a covalent bond, resulting in a greater difference in electronegativity between phosphorus and fluorine compared to phosphorus and chlorine.
Is sulfur more reactive than phosphorus?
Sulfur is less reactive than phosphorus. Phosphorus is more likely to form compounds with other elements due to its higher reactivity.
What has more protons iron or phosphorus?
Iron has more protons than phosphorus. Iron has 26 protons while phosphorus has 15 protons.
Is phosphorus a chemical?
If phosphorous occupie the gallium sites, it would be n type semiconductor since it has more number of valence electrons than gallium and if it occupie the sites of the arsenic sites there is no change since the valency of arsenic and phosphorous be the same
Why some elements in the periodic table have more than one valency?
because the valency is no of electrons present in last shell and different element have different electronic configuration.
What is more reactive than phosphorus?
Fluorine is more reactive than phosphorus. It is the most reactive non-metal element due to its high electronegativity and small atomic size.
Which has more outer electrons phosphorus or silicon?
Phosphorus has more outer electrons than silicon. Phosphorus has 5 outer electrons in the third energy level, while silicon has 4 outer electrons in the third energy level.
Why is nitrogen more electronegative than phosphorus?
Chlorine is more electronegative than phosphorus. Generally, the trend of the periodic table is that electronegativity increases as you go from left to right, and it decreases as you go down.
What type of bond is bromine and phosphorus?
Bromine and phosphorus can form an ionic bond because bromine is more electronegative than phosphorus, causing it to attract and accept electrons from phosphorus to form a stable compound.
