In general, how many valence electrons do transition metals have? (Valence are highest n, only s and p sublevel) What ion is likely to form with transition metals? Speculate as to why you think some transition metals can form multiple ions?

2 valence electrons.

Explanation:

Valence electrons are the sum total of all the electrons in the highest energy level (principal quantum number n). Most transition metals have an electron configuration that is  

n

s

2

(

n

−

1

)

d

, so those  

n

s

2

electrons are the valence electrons

it can be icreased by increasing pressure.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer