The number of valence electrons of C2H4 is 12 but usually it is 2+ charge so in that case it will be 10. You can find this by drawing the electron dot (Lewis) structure of each, and counting the dots.
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6
There are 3 valence electrons in an atom of aluminium.
There are no valence electrons.
Arsenic has 5 valence electrons.
Indium has 3 valence electrons.
8 valence electrons- 1s22s2p63s2p6
Zinc has two valence electrons.
Aluminum has 3 valence electrons.
5 valence electrons.
Beryllium has two valence electrons.
3 valence electrons
There are 3 valence electrons in an atom of aluminium.
There are no valence electrons.
Lead has 4 valence electrons.
6 Valence Electrons
Valence electrons are placed in the outermost shell of electrons.