Answer:
B
Explanation:
the energy of two separate hydrogen atoms decreases as they approach each other, and the single electrons on each atom are shared to form a covalent bond.
Phosphorus tribromide is a covalent compound because they share electron pairs.
Answer:
The answer is "
"
Explanation:
1-mole molecules as per Avogadro number
1-mole 


Answer:
B. 120 cm
Explanation:
The scale is 1 to 15, so when we are given the value of 8cm all you have to do it multiply 8 by 15 which leaves you with 120.
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