Answer:
C. Phosphorus (P)
Explanation:
Given;
Electron configuration 
Firstly we have to find out the number of shell of given element. For this we have to add number of electron of each shell.
Here counting goes to 3 that means element have three shells. Now we find out number of electrons in each shell.
First shell of an element is K and it has only one sub shell that is 1s. In this element 1s contains only 2 electrons.
For 2nd shell that is L has two sub shell 2s and 2p, for this element 2s contains 2 electrons and 2p contains 6 electrons. That means total number of electrons for L shell is 8.
Now for 3rd shell that is M has two sub shell 3s and 3p, for this element 3s contains 2 electrons and 3p contains 3 electrons. That means total number of electrons for M shell is 5.
Now total number of electrons for the element is the sum of number of electrons in each shell.
Total number of electrons = 2+8+5=15
And we know the number of electrons of any neutral element is equal to the number of protons and number of protons gives us atomic number of the element.
So the atomic number of given element is 15 that is of Phosphorus.
Answer:
the amount of calcium is variable.
Explanation:
osteoporosis is an illness that is caused by lack of calcium in a person's body.
Answer:
The answer would be D my friend.
Explanation:
Hope this helps. Good luck and have a great day!!
It can be answered through an investigation.
Explanation:
The question ''Which of the Great Lakes is the largest body of water'' is a good scientific question because it is a question that can be answered through investigation. To answer this question, a scientist, or a person that has it as an interest simply needs to go on terrain and do the research, or can simply acquire data that is already collected. Through it, it can be determined which of the Great Lakes is the largest body of water, which is the second largest etc.
The five Great Lakes are:
- Lake Superior
- Lake Hudson
- Lake Michigan
- Lake Erie
- Lake Ontario
There are five lakes that consist the Great Lakes, and all of them have formed in the same period and through the same process. The lakes all have glacial origin, and all of them have formed when the last Ice Age ended. The largest of the Great Lakes is Lake Superior, while the smallest is Lake Ontario.
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