Home
Class 11
CHEMISTRY
Use the periodic table to answer the fol...

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.

Text Solution

Verified by Experts

a. The general electronic configuration of the elements having five electrons in the outer subshell is `ns^(2)np^(5)`.This electronic configuration is characteristic of elements of group `17` i.e. hallogens and their examples are `F`,`Cl`,`Br`,`I`,`At`,etc.
b. The elements which have a tendency to lose two electrons must have two electrons in the valence shell. Therefore, their general configuration should be `ns^(2)`. This electronic configuration is characterstic of group `2` elements, i.e. alkaline earth metals and their examples are `Mg`,`Ca`,`Sr`,`Ba`, etc.
c. The elements which have a tendency to accept two electrons must have four electrons in the valence shell. Therefore, their general electronic configuration is `ns^(2)np^(4)`. This electronic configuration is characteristic of group `16` elements and their examples are `O`,`S`,`Se`,`Te` etc.
d. A metal which is liquid at room temperature is mercury. It is a transition metal and belongs to group `12`. A non-metal which is a gas at room temperature is nitrogen (group 15),oxygen (group 16),flurine, chlorine (group 17) and inert gases (group 18). A non-metal which is a liquid at room temperature is bromine (group 17).
Promotional Banner

Topper's Solved these Questions

  • APPENDIX - INORGANIC VOLUME 1

    CENGAGE CHEMISTRY|Exercise Exercise very short|70 Videos

  • APPENDIX - INORGANIC VOLUME 1

    CENGAGE CHEMISTRY|Exercise Exercise Short|146 Videos

  • ALKYNES

    CENGAGE CHEMISTRY|Exercise Exercises (Archives - Analytical and Desriptive Type)|4 Videos

  • ATOMIC STRUCTURE

    CENGAGE CHEMISTRY|Exercise Concept Applicationexercise(4.3)|19 Videos

Similar Questions

Explore conceptually related problems

Use of Modern periodic table to answer the following questions: (i) Identify an element with six electrons in the outermost shell. (ii) Identify an element that would tend to lose one electron. (ii) Identify an element that would tend to gain three electrons. (iv) Identify the group having metal, non-metal, liquid as well as gas at 30^(@)C temperature.

Explain the following question (based on size of atoms or ions and other periodic properties): a. Arrange the following species in decreasing order of their sizes//ionic radii. i. Ar, K^(o+),Cl^(ɵ),S^(2-) and Ca^(2+) ii. Al^(3+), Mg^(2+),Na^(o+),Cl^(ɵ), N^(3-) and O^(2-) b. What are isoelectronic species? Name the species which are isoelectronic with each of the following atom or ions. i. Rb^(o+) ii. F^(ɵ) , iii. Mg^(2+) iv. Ar c. Arrange the following species // atoms in decreasing order of reducing character. i. Na, Mg and Al ii. Mg, Ca and Sr iii. Na, K and Rb iv. F^(ɵ), Cl^(ɵ),Br^(ɵ) and I^(ɵ) d. The decreasing order of reactivety of group 1 elements is Cs gt Rb gt K gt Na gt Li whereas that of group 17 elements is (Cl gt F gt Br gt I) . Explain. e. Predict the formula of the stable binary compounds that would be formed by the combination of the following pairs of elements: i. Mg and N ii. Si and O iii. Elements with Z=71 and F iv. P and F v. Al and I vi. Li and O f. Ansewer the following by the use of periodic table. i. Identify the element that would tend to gain two electrons. ii. Identify the group having metal, non-metal, liquid as well as gas at the room temperature, iii. Identify the element with five electrons in the outer shell. iv. Identify the element that would tend to lose two elctrons.

Element "X" has two electrons in its "M" shell.Identify the element.

Read the following statements and identify the elements : A lustrous non-metal which has 7 electrons in its outermost shell.

Identify, the elements with the following property The metal which exists in liquid state at room temperature.