When is an element most likely to be unreactive?

when it loses all of its valence electrons

when its valence shell is completely full

when its electrons move to higher energy levels

when it shares all of its valence electrons

Which band of the electromagnetic spectrum has the lowest frequency

If the energy of a photon is 1.32 * 10¯18 j, what is its wavelength in nm? a. 1.50 * 10¯7 nm b. 150. nm c. 1.99 * 1015 nm d. 1.99 * 1024 nm e. none of these choices is correct.

What is the moho? a. the boundary between the outer and inner core b. the boundary between the crust and the mantle c. the material of which the mantle is composed d. an area of the mantle that will not transmit seismic waves?

A pump is used to empty a 5200 L wading pool. The water exits the 3.0-cm-diameter hose at a speed of 2.2 m/s. How long will it take to empty the pool? Express your answer using two significant figures.

Ian has a mass of 58.0 killograms. What's his weight

A crude approximation for the x component of velocity in an incompressible laminar boundary layer is a linear variation from u = 0 at the surface (y = 0) to the freestream velocity, U, at the boundary-layer edge (y = δ).

Why did dad leave mom?

Sal drew the electron dot diagram of an aluminum atom as shown. How should Sal correct his diagram? He should add five more dots so that the atom obeys the octet rule. He should add ten more dots so that all thirteen electrons are shown.

What uses electricity

How do the elements in the Noble Gas family compare?