The valence electrons of an atom of which element would feel a greater effective nuclear charge than the valence?
the valence electrons of an atom of which element would feel a greater effective nuclear charge than the valence electrons of a boron (b) atom?

aluminum (al)
beryllium (be)
hydrogen (h)
carbon (c)

The effective nuclear charge is an innate property of a specific element. It is the pull of force that an electron feels from the nucleus. It is related to the valence electron by the equation: Z* = Z-S, where Z* is the effective nuclear charge, Z is the atomic number and S is the shielding constant.

For the following elements in the choices, these are their values of Z*:

Aluminum - +12.591
Beryllium - +1.912
Hydrogen - +1
Carbon - +4

The effective nuclear charge of Boron is +3. Thus, the answers are  Aluminum and Carbon.

Ais the correct answer