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Why does hydrogen show both electropositive and electronegative character?
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Are Carbon and Hydrogen both nonmetals?
No, hydrogen and carbon are both classified as metals at solid form on the periodic table.
Why the acidic character increases with the decrease in pH?
The acidic character increases with decrease in pH because the pH and acidity are both dependent on the hydrogen ion concentration, with pH being the negative log of the hydrogen concentration. So, at the concentration of H+ increases, the negative log of the H+ concentration decreases.
Why can't iodine be used to displace bromine from sodium bromide?
Iodine is lower in the halogen displacement series than bromine, i.e., iodine is less electronegative than bromine. However both chlorine and fluorine can displace bromine in sodium bromide, as they are more electronegative.
How can there be 1 proton with a hydrogen atom with a mass?
Protons and electrons both have mass. Therefore a hydrogen atom that contains one or both will have mass. (It will, however, be less massive than a hydrogen atom that also has neutrons.)
Why is the position of hydrogen not justified in periodic table?
Because hydrogen resembles both Halogens and Alkali Metals.
Why is hydrogen the only element not placed in a group on the periodic table?
due to its dual nature having both the characteristics of electropositive and electronegative
What is the value of H in chemistry?
'H' means Hydrogen.Hydrogen has 1 proton and 1 electron but no neurons.It is both an electropositive and electronegative element.
Would copper and calcium react when put together?
No, they will not react when put together. This is because both calcium and copper are electropositive metals. No two electropositive elements or electronegative elements react under normal conditions.
Why there is hydrogen bonding in water but not in hydro cloric acid although both have hydrogen?
FONFlorineOxygenNitrogenThe hydrogen must be bonded to one of these highly electronegative atoms to participate in hydrogen bonding.HClChlorine is not of this group shown above. Do you know why?
Why would hydrogen stored in a fuel tank filled with lithium nitride be safer in an accident then a cylinder full of hydrogen?
S Elements are attracted to P element H20 for example, 2 elements combining Hydrogen with a Electronegative elements. If 2 Electropositive element come together they push away from each other. If you combine Hydrogen with Lithium they do both condense like (S + P) and repel like (S + S) its a phenomenon. These elements combine increasing the stability of hydrogen while increasing pressurized tanks. Its not talked about because its used in nuclear testing and weapons.
Why is ethanol miscible with water?
Ethanol : C2H5-O-H Water : O-H-O One of the Oxygen atom in water can form a Hydrogen bond with the last Hydrogen atom as shown above. Hydrogen bonds are the electrostatic forces of attraction between an electron-deficient hydrogen bonded to a very electronegative atom and the lone pair of a neighbouring very electronegative atom. In Ethanol, the final Hydrogen is bonded with Oxygen, which is a very electronegative atom, therefore the Hydrogen atom is electron-deficient because the shared electron pair is attracted very close to the Oxygen and hence creates a strong dipole moment. In water, both the Oxygen atoms are very electronegative and will attract the positive end of Ethanol, which is the Hydrogen to form Hydrogen bond. Hydrogen bonds are much stronger than van der Waals' forces or permanent dipole attraction.
What type of bonds hold together the base in DNA molecule?
A hydrogen bond is the attractive interaction of a hydrogen atom with an electronegative atom, such as nitrogen, oxygen or fluorine, that comes from another molecule or chemical group. The hydrogen must be covalently bonded to another electronegative atom to create the bond. This type of bond occurs in both inorganic molecules such as water and organic molecules such as DNA.
What is a anhydride?
A compound of hydrogen with another, more electropositive element. Typically, the elements in Group 1 or Group 2 of the periodic table will form hydrides when combined with H (for instance, CaH2). Usually H forms a positive ion, H+, but when combining with certain very electropositive elements (in other words, elements that are NOT very electronegative), it forms a negative ion, H-, because H is more electronegative than many of the Group 1 and Group 2 metals. Since H isn't very electronegative compared to most elements, it is much more often H+ than H-.
Is hydrogen fluoride polar or non polar?
Hydrogen gas, H2, is nonpolar because both hydrogen atoms have the same electronegativity, so the difference in electronegativity is 0, which means the bond is nonpolar, and since this is the only bond, the gas is nonpolar.
What is the difference between dipole dipole attraction forces and an ionic bond?
Covalent - equal sharing of generally one pair of electrons (e.g. H2 hydrogen molecule)Polar covalent- ubequal sharing - the more electronegative element "attracts " the electrons in the bond towards it causing the formation of a small negative charge (and a small compensating positive charge on the less electronegative atom) example HCl, hydrogen chloride moleculeA hydrogen bond is a weak electrostatic bond invoving a hydrogen atom covakently bonded to one atom attracted to a very electrnegative atom. (Example is water, H2O)
When very electronegative atoms like oxygen bond to atoms with lower electronegativity like lithium What is the result?
The oxygen atom becomes strongly negative. The hydrogen atom becomes partially positive.
How are ionic and covalent bonds different from hydrogen bonds?
Ionic and covalent bonds are both chemical bonds formed by either sharing or transferring electrons. Hydrogen bonds are technically not a kind of chemical bond but a kind of intermolecular attraction between polar molecules in which hydrogen is bonded to one of the very electronegative elements nitrogen, oxygen, or fluorine.
