Element Y has a proton number of 18 and a nucleon number of 40.
Which statements about element Y are correct?
1. It has 40 neutrons in its nucleus.
2. It has 22 electrons.
3. It is unreactive.
4. It is in Group 0 of the Periodic Table.
1 )
1 and 2
2 )
2 and 3
3 )
2 and 4
3 and 4
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!
پرسش و پاسخ های مشابه
سوال کنید یا به سوالات دیگران پاسخ دهید ...