Question

Which of the following is true about two unknown elements $$_{20}^{40}X $$  and $$_{34}^{74}Y $$ ?

Accepted Answer

Their valence electrons are located in the same main energy level.

Answer

They have the same number of valence electrons.

Answer

They tend to form the same ions to reach the electronic configuration of a noble gas.

Answer

They are both paramagnetic.

Question 28 - Science Practice Test for the HiSET Test