Use the periodic table to answer the following questions.

(a) Identify an element with five electrons in the outer subshell.

(b) Identify an element that would tend to lose two electrons.

(c) Identify an element that would tend to gain two electrons.

(d) Identify the group having metal, non-metal, liquid as well as gas at the room temperature

Asked by Pragya Singh | 1 year ago |  58

1 Answer

Solution :-

(a) Element with 5 electrons in outer subshell is having electronic configuration ns2np5. Halogen group is having the same electronic configuration. So, the elements can be At, I, Br, Cl and F.

(b) The elements that tend to gain 2 electrons are those who can achieve stable inert gas configuration by gaining these electrons. They are having electronic configuration ns2np4. Oxygen containing group is having the same electronic configuration.

(c) The elements that tend to expel 2 electrons are those who can achieve stable inert gas configuration by expelling these electrons. They are having electronic configuration ns2. 2nd Group elements are having the same electronic configuration. So, the elements can be Ba, Sr, Ca, Mg, Be.

(d) Elements of group 17 are having liquid, gas, metal and non-metals as well at room temperature.

Answered by Abhisek | 1 year ago

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