<span>Kr has 8 valence electrons plus 1 for each Kr-F single bond. Total = 10 elcetrons
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A is your answer.
On the periodic table the atomic number is the number of protons inside the nucleus.
Answer:
The correct answer is - B. New Moon.
Explanation:
The change of moon disc from all black to all light to all dark again is called the lunar cycle. It takes almost 30 days (29.53059 to be precise). The time from all black to all light or all light to all black is almost 15 days. All black moon is termed as the new moon and all light is termed as the full moon.
As given that the full moon is shown happening on the eleventh of the month then what moon would be around 25 which is 14 days later that should be in waxing gibbous phase and almost new moon.
Thus, the correct answer is - B. new moon.
atomic number = number of protons
number of protons = number of electrons
So, number of electrons = 5
So, electron configuration = 2, 3
So, its valency = 3
Answer:
Explanation:
Hello!
In this case, since the writing of a net ionic equation first implies writing the complete molecular equation:
We can see that HCl and MgCl2 are ionized because they are aqueous, thus we write:
In such a way, we can cancel out the chloride ions as they are the spectator ones to obtain the net ionic one:
Best regards!