Choose the correct options for the following questions.
When two hydrogen atoms approach each other
Difficulty: Easy
A:
Forces of attraction operate
B:
Force of repulsion operate
C:
Forces of attraction and repulsion operate simultaneously
D:
Nothing happens
The bond length between atoms of hydrogen in the hydrogen molecules is:
Difficulty: Easy
A:
7.54 nm
B:
0.0754 nm
C:
0.754 nm
D:
0.00754 nm
Which of the following has smaller size:
Difficulty: Easy
A:
$Fe^{+3}$
B:
$Fe^{+2}$
C:
$Fe^{+1}$
D:
Fe
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