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Home » 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
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
CBSE | Chemistry | Class 11 | Classification of Elements and Periodicity in Properties | NCERT
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

Answer:

(a) The electrical configuration of an element with 5 electrons in the outer subshell is ns2np5. The electrical configuration of the Halogen group is the same. As a result, the elements might be At, I, Br, Cl, or F.

(b) Elements that tend to gain two electrons are those that can gain these electrons and achieve a stable inert gas configuration. They have the ns2np4 electrical configuration. The electronic configuration of the oxygen-containing group is the same.

(c) Elements that have a tendency to expel two electrons can produce a stable inert gas configuration by doing so. Electronic configuration ns2 is what they have. The electronic configuration of the elements in the 2nd Group is the same. As a result, the elements may be Ba, Sr, Ca, Mg, and Be.

(d) At room temperature, group 17 elements exist as liquids, gases, metals, and non-metals.

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