A) based on the spectrum, (i) write the ground-state electron configuration of the element, and (ii) identify the element. (b) calculate the wavelength, in meters, of electromagnetic radiation needed to remove an electron from the valence shell of an atom of the element.

Question: The question is incomplete. The spectrum was not added to the question. Find attached of the spectrum

(A)

(i)  1s²   2s²   2p⁶   3s²    3p⁶    4s²

(ii) Calcium

(B) Wavelength = 2.03*10^-7 m

Explanation:

A)

(i)  from the spectrum, the electron configuration can be written as;

1s²   2s²   2p⁶   3s²    3p⁶    4s²

(ii) from the electron configuration, the element has 20 number of electron.

Therefore, the element is calcium.

(b)Calculating the wavelength using he formula;

λ = h*c/ΔE

where;

h = 6.626*10^-34

c = 3*10^8

ΔE = 0.980*10^-18

Substituting , we have;

λ = h*c/ΔE

  = (6.626*10^-34 *  3*10^8)/ 0.980*10^-18

  = 1.9878*10^-25/0.980*10^-18

  = 2.03*10^-7 m

honesty and integrity.

inspire others.

commitment and passion.

good communicator.

decision-making capabilities.

accountability.

delegation and empowerment.

creativity and innovation.

here are the traits of a good leader.i'm not going to give you the examples so you can copy right it.that's illegal but i hope that this you out.

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

: )