The total number of electrons in one atom of element Q is 17 and in one atom of element R is 19.
Which statement about elements Q and R is correct?
1 )
Q and R react together to form a covalent compound.
2 )
Q forms positive ions.
3 )
R has more outer shell electrons than Q.
R is more metallic than Q.
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
