Which statement is true A. Energy is always released when a neutral atom gains an electron
B. Tellurium and polonium are semi metals.
Answers
Answer:
Both statements are true.
Explanation:
A. Energy is always released when a neutral atom gains an electron. This process is called electron affinity. It is reverse of ionization energy.
B. Tellurium and Polonium are semimetals or metalloid. They show both the properties of metal and non-metal.
A. Energy is always released when a neutral atom gains an electron .
B. Tellurium and polonium are semi metals.
Explanation:
Both the statements are true .
A . It is true that energy is released when a neutral atom gains a electron .The energy released is called as "Electron affinity ".
It is -ve , when an atom has lot of attraction for an incoming electron.For example : Fluorine .
It can be +ve ,when an atom doesn't have attraction for incoming electron .
For example : Noble gases
B. Tellurium and polonium are semi metals.
They are semi metals or metalloids as they possess some properties of metals and some of non metals .
For example : Other metalloids are silicon , germanium ,antimony , boron etc