Which statement about trends down groups in the Periodic Table is correct?
1 )
The Group I elements become less reactive with water.
2 )
The Group I elements show an increase in melting point.
The Group VII elements become darker in colour.
4 )
The Group VII elements show an increased ability to displace halide ions.
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!