Which of the following electron configurations of neutral atoms represent excited states?

( a) [xe]6s24f1
( b) 2s2
( c) 1s22s22p63s23p63d2
( d) [ar]4s23d3
(e ) [kr]5s14d5

Apush or pull that moves or changes and object when to objects touch

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.