Which of the following statements about valence electrons is false? •Valence electrons are exposed to the nucleus of other atoms

•Valence electrons are the outermost electrons only

•Valence electrons are the only factor that determines the type and number of bonds that can form

•Valence electrons are the ONLY electrons that can form chemical bonds

Please answer ASAP!!

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?