Answer :
The chemical bond between hydrogen and oxygen atoms in a water molecule forms by a shared pair of electrons between hydrogen and oxygen
Further explanation
Chemical bonds that occur between 2 atoms can consist of:
- 1. ionic bonding
The bonding that occurs due to electron handover. It can occur in metal and non-metal atoms. To get stability, atoms release or bind electrons to get stable electron regulation from noble gases
- 2. covalent bonding
The bonding that occurs due to the shared use of electron pairs
The two bound atoms contribute their electrons to produce bonds
Generally occurs in non-metallic elements
In the water molecule itself:
Electron configuration H = 1s²
Electron configuration O = 1s² 2s² 2p⁴
H atoms need 1 electron to be stable like the duplet configuration of the noble gas element He and O atoms need 2 electrons to be stable like Ne
So that the O and H atoms contribute their electrons and covalent bonds are formed
The occurrence of polar covalent bonds of water molecules is the electronegative difference between two bonding atoms.
The attraction of electrons (electronegativity) from O atoms in water molecules causes electrons to be attracted more to O atoms and electrons are not evenly distributed so that negative charge/poles appear on O atoms and positive charge/poles are at 2 Hydrogen atoms
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Keywwords : chemical bond, ionic bond, covalen bond, water, a shared pair of electrons
Answer is “forms by a shared pair of electrons between hydrogen and oxygen”.
Further explanation
Chemical bonds
Such bonds that hold particles together and make impermanent associations that are fundamental to life. Sorts of substance bonds including covalent, ionic, and hydrogen bonds and London scattering powers.
Living things are comprised of atoms, yet by and large, those particles aren't simply drifting around organisms. Rather, they're normally interfacing with different atoms.
Why chemical bond forms?
The fundamental answer is that atoms are attempting to arrive at the steadiest (least vitality) state that they can. Numerous molecules become stable when their valence shell is loaded up with electrons or when they fulfill the octet rule (by having eight valence electrons). On the off chance that atoms don't have this course of action, they'll "need" to arrive at it by picking up, losing, or sharing electrons through bonds.
Ionic bond
Ionic bonds will be bonds shaped between particles with inverse charges. For example, sodium ion with a positive charge and chloride ion with negative charge draw in one another to make sodium chloride or table salt.
Covalent bond
Another way molecule can turn out to be increasingly steady is by sharing electrons (instead of completely picking up or losing them), in this covalent bond forms. Covalent bonds are more typical than ionic bonds in the molecules of living beings.
For example, a water molecule, H2O comprises two hydrogen particles that make a bond with oxygen atom. Every hydrogen imparts an electron to oxygen, and oxygen imparts one of its electrons to every hydrogen.
Hydrogen bond
In a polar covalent bond comprising hydrogen (e.g., an O-H bond in a water atom), the slight positive charge will be present on hydrogen in light of the fact that the bond electrons are pulled strongly toward the other atom. Due to this slight positive charge, the hydrogen will be pulled in to any neighboring negative charges. This association is known as a hydrogen bond.
Answer details
Subject: Biology
Level: Middle school
Key words
- Chemical bonds
- Why chemical bond forms?
- Ionic bond
- Covalent bond
- Hydrogen bond
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