Question

which is true for valence electrons?
A- valence electrons are always located n the innermost energy level
B- valence electrons may be lost or gained by an atom when bonding occurs with another atom
C- each element in the periodic table has a different number of valence electrons
D- valence electrons are found only in radioactive isocept

Answer 1

A

Answer 2

Every atom has valence electron

Answer 3

Outermost electrons of any atom r called valence electrons

Answer 4

hint:
when two or more atoms form a molecule, then they share each other some electrons. Those electrons come from their outermost levels of energy of their corresponding atoms