The number of protons is equal to the atomic number and the number of electrons is the same, because it has to cancel that charge of the protons
So, the number do electrons and protons is 20.
The number of neutrons is equal to the (mass number - atomic number).
So, 40.08 - 20 ~ 20 neutrons
Answer: physical please let me know if its wrong !
Answer:
first option - liquid particles gain kinetic energy and start moving faster around each other
Explanation:
this is a rising section of the graph, meaning that the state of matter is not changing but it warming up and increasing particle movement. This increase in movement is explained by the increase in kinetic energy. (when the kinetic energy rises, the movement rises)
Answer:
C) 1.15 × 10⁻⁷ mm
Explanation:
Step 1: Given data
Average distance between nitrogen and oxygen atoms: 115 pm
Step 2: Convert the distance to meters (SI base unit)
We will use the conversion factor 1 m = 10¹² pm.
115 pm × (1 m/10¹² pm) = 1.15 × 10⁻¹⁰ m
Step 3: Convert the distance to millimeters
We will use the conversion factor 1 m = 10³ mm.
1.15 × 10⁻¹⁰ m × (10³ mm/1 m) = 1.15 × 10⁻⁷ mm
