When x is an odd number, the function f(x) = 2(x + 2) gives an even number. identify the set of even numbers that correspond to this set of odd numbers that satisfy the function. {41, 57, 77, 83, 95}

The set of even numbers that satisfy this set of odd numbers is given by
f(x)|x belongs to {41,57,77,83,95}
In other words, the new set is
{f(41),f(57),f(77),f(83),f(95)}

where f(41)=2(41+2)=2(43)=86,
f(57)=2(57+2)=2(59)=118,
...

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