Question

questions 2 in science​

Answer 1

Answer:

sorry I am not understand your questions.

Answer 2

$\bold{Answer}$

$\bold{10)}$Nobel gases are placed in a separate group because they are extremely unreactive & they generally do not combine with other elements of the periodic table except Xe.

$\bold{11)}$

• A is lens
• B is cornea
• C is iris
• D is retina