What is the answer for 805 tens = with place value chart

In the given problem, the numerical value of 805, which is in the tens place, we can first elaborate and clearly specify the order of numbers by using the expanded form: 1.  800 = eight hundred / hundreds 2.  0 = zero / tens 3.  5 = five / ones Conclusively the tens value of the number is zero or none, since zero is not a real number then it can’t be considered but nevertheless, the value is 0 expressed with respect to the whole numbers.

Element 17 is chlorine it is a group 7 element(halogen) and belongs to period 3 of the periodic table