The force of attraction between covalent molecules is?
electrostatic attraction
hydrogen bonding
ionic force
van der Waals forces
Correct answer is A
Covalent bond involves the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.
Water molecules are held together by
covalent bond
hydrogen bond
ionic forces
van der Waals forces
Correct answer is B
No explanation has been provided for this answer.
Arrange the following elements in order of increasing electron affinity: Br2CI2
I 2
F 2
I 2CI2Br2F 2
I 2Br2CI2F 2
CI2 I 2Br2F 2
Br2CI2 I 2 F 2
Correct answer is B
No explanation has been provided for this answer.
W and X only
Y and Z only
W and Y only
W, Y and Z only
Correct answer is C
No explanation has been provided for this answer.
Elements in the same group of the periodic table have
the same number of valence electrons
the same number of electron shells
different chemical behaviour
the same atomic size
Correct answer is A
No explanation has been provided for this answer.