General questions in chemical bonding for 10th class
Answers
1.
When is a polar covalent bond formed?
When two polar atoms combine.
When the shared pair of protons is more attracted to one atom than the other.
When the transferred pair of electrons is more attracted to one atom than the other.
When the shared pair of electrons is more attracted to one atom than the other.
2.
What happens in constructive interference?
Four orbitals are made instead of two.
The orbitals subtract.
The orbitals add.
Multiple orbitals are made.
3.
An ionic compound is formed by what?
A metal cation and a non-metal anion
A covalently bonded molecule
A metal anion and a non-metal cation
Any two molecules as long as they are different
A metal and a non-metal atom
4.
Which of the following best describes the octet rule?
Atoms like to have their electrons in energy shells.
The outermost energy shell of an atom likes to lose electrons once it becomes full with 8 electrons.
The outermost energy shell of an atom likes to be full with eight electrons.
The outermost energy shell of an atom likes to be empty.
5.
Organic molecules always contain _____.
sulfur
hydrogen
carbon
nitrogen
oxygen