What type of bond is formed when two atoms share electrons?
A covalent bond is formed when two atoms share electrons to achieve a stable electron configuration.
What is the octet rule?
The octet rule states that atoms tend to gain, lose, or share electrons to achieve a stable electron configuration with 8 electrons in their valence shell.
What is the main characteristic of ionic bonding?
Ionic bonding occurs when one atom donates electrons to another atom, resulting in the formation of oppositely charged ions that attract each other.
What is the bond angle in a molecule with a tetrahedral geometry?
In a tetrahedral molecule, the bond angles between atoms are approximately 109.5°.
Which of the following molecules has a polar covalent bond?
A polar covalent bond occurs when electrons are shared unequally between atoms, leading to partial positive and negative charges.
What is the molecular geometry of a molecule with two bonding pairs and no lone pairs of electrons on the central atom?
The molecular geometry is linear with a bond angle of 180°.
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Which of the following elements has the highest electronegativity?
Electronegativity increases across a period and decreases down a group. Fluorine has the highest electronegativity.
What is the difference between sigma and pi bonds?
Sigma bonds are formed by head-on overlapping of atomic orbitals, while pi bonds are formed by side-on overlapping.
Which of the following compounds is ionic?
Ionic compounds are formed when one atom donates electrons to another, resulting in the formation of oppositely charged ions.