Answer:
The central portion is called neutron.
Explanation:
An atom has a central part known as nucleus and outer shells.
The central nucleus contains protons (the positively charged sub atomic particle) and neutrons (the neutral sub atomic particle).
The outer portion has negatively charged sub atomic particle known as electrons.
The atomic number of an element is the number of protons present in the nucleus.
Answer:
The Answer is Nucleus
Explanation:
The Nuleus is the brain of the atom always like the "boss"
An atom with six electrons in its valence shell will have two unpaired electrons. The four electrons will occupy two orbitals fully, while the remaining two electrons will each occupy one orbital in accordance with Hund's Rule.
An atom with six electrons in its valence shell typically belongs to group 16 on the periodic table. In this group, Oxygen is a perfect example having 'six valence' electrons but only 'two of them are unpaired'. The four electrons are arranging themselves in two fully occupied orbitals, while the remaining two electrons each occupy one orbital, following Hund's Rule, which states that orbitals in the same subshell fill with one electron first, with spins parallel, before they begin to pair up. Therefore, an atom with six electrons in its valence shell would have two unpaired electrons.
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Answer: 2
Explanation:
In order to have a complete shell, you need 8 total electrons.
Answer:
Atomic models have similarities and differences
Explanation:
Hi
Dalton proposes an indivisible model of the atom.
Thomson proposes an atom formed by negative electric charges (electrons) embedded in a positive mass.
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The rate of cooling of the water is 2.5°C per minute, calculated by using the difference in temperature over the time interval and assuming a linear rate of cooling.
The rate of cooling of water is the change in temperature over time. If the temperature of water drops from 60 degrees Celsius to 35 degrees Celsius in ten minutes, we can calculate the rate by subtracting the final temperature from the initial temperature and then dividing by the time elapsed. The formula for the rate of cooling is:
Rate of cooling = (Initial Temperature - Final Temperature) / Time
In this case:
Rate of cooling = (60°C - 35°C)/10 minutes = 2.5°C per minute
This calculation assumes that the cooling process follows a linear rate, which might not be the case in real-world scenarios as the rate can change over time due to various factors such as the properties of the container, the environment, and the volume of water.
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Answer:
116
Explanation:
neutrons = mass number - proton number
66 = mass number - 50
add 50 on both sides
66 + 50 = 116
so the mass number is 116
b.oxygen and nitrogen gases in the air
c.oil and vinegar salad dressing
d.a silver mercury amalgam used to fill a tooth cavity