00:01
However, the question is what is the atomic number of element which is in the same group of periodic table and which is the element with the atomic number 15th is present.
00:09
So here atomic number 15 is present in that.
00:23
Number 1 is given option is 5.
00:29
Number 2 is given option is 7.
00:32
Number 3 is given option is 11.
00:35
Number 4 is given option is 17.
00:39
So what is the atomic number of element? what is the same group of periodic table in which the element is same atomic number.
00:48
Same group of element and same atomic number.
00:50
So atomic number 15 means phosphorus.
00:56
So, phosphorus configuration.
01:00
Neon 3 .s2, 3p3, outromous shell...