C.

In an atom, an electron in which of these sublevels can absorb a photon of energy but cannot emit one? a. 3s b. 2s c. 3p d. 1s e. 3f Would it be 1s? I don't really understand, if someone could explain this to me I'd appreciate it

A tin atom has 50 electrons. Electrons in which sublevel of this atom would experience the lowest effective nuclear charge? a. 1s b. 3p c. 3d d. 4s 3. 5p

In which orbital does an electron in a phosphorus atom experience the greatest effective nuclear charge? a. 1s b. 2s c. 2p d. 3s e. 3p I originally thought 3p, since those are the outer electrons, but that was marked wrong. Why is it not 3p? Is the right...

Under the correct conditions, the element molybdenum emits X-rays with a characteristic wavelength of 0.711A (7.11*10^-11m). These X-rays are used in diffraction experiments to determine molecular structures. How fast does an electron need to be moving to...

For the function f(x)=3x^2-8x find: a. f(2) = -4 b. f(-3) = 51 Right?

For the function f(x)= 3x-8 / x+5, find: a. f(0) = -8/5 b. f(-1) = -11/4 Correct?

Let f(x)=3x and let g(x)=x-2 Find g of g(5) Is the solution "1" correct?

f(x)=x/(x+2) and g(x)=4x-2 (A.) Find f of g(1). Is the solution "1/2" correct? (B.) Find g of f of f(2). Is the solution "-6/5" correct?

1. The points L(4, 0),M(10, 0), and N(7, 5) form Triangle LMN. What is the sum of the slopes of the three sides of the triangle?

A kickoff sends a football with an initial velocity of 25 m/s at an angle of 50 degrees above the horizontal. a) find the x and y components of the velocity b) find the time the ball is in the air c) find the horizontal distance the ball travels before hi...

Oh, ok. So 5p?

That makes sense, thank you!

1s, right?

Oh, yes that's right. Mass of electron= 9.11*10^-31kg. Therefore v=1.02*10^7m/s

Cyn.. That can't be right. Try it on a calculator..

Yeah. 51, like I said, right?

thank you so much!!!!!