Formation of Ions in Metals

Q.

Is $\mathrm{MgO}$ covalent or ionic?

Q. An atom loses 2 valence electrons to form a cation having charge of _____ .

1. 6
2. -6
3. 2
4. -2

Q.

Name the following

A metal that gives brick red flame.

Q. Why do most of elements form ions while entering into chemical reactions?

Q.

Are halogens positive or negative?

Q.

Chalk, iron nail, wood, aluminum, candle, and cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Q.

What is the minimum charge on a particle?

Q.

An atom has two electrons more than the noble gas configuration. What type of ion will it form ?

Q. The charge of an electron is $1.6\times {10}^{-19}$ coulombs. What will be the value of charge on ${Na}^{+}$ ion?

1. $1.6\times {10}^{-19}C$
2. $3.2\times {10}^{-19}C$
3. $2.4\times {10}^{-19}C$
4. $10\times 1.6\times {10}^{-19}C$

Q. Protium differs from deuterium in

1. Bond length

2. Nuclear radius

3. Electronic configuration

4. Chemical properties

Q.

Trick to remember reactivity series of metals.

Q. ______ bond is formed by the transfer of an electron from atom A to atom B.

1. Covalent
2. Atomic
3. Ionic
4. Molecular

Q.

Elements try to become stable by attaining inert gas configuration. In the ionic compound sodium chloride (NaCl), sodium and chlorine attain stability by losing and gaining an electron respectively. Identify the correct options assuming the above situation.

1. Sodium forms positive ion

2. Chlorine forms positive ion

3. Chlorine forms negative ion

4. Sodium forms negative ion

Q. Why is there a nesecity of neutron in an atom?

Q.

Solve the following crossword puzzle by identifying the elements from the electronic configuration given for them.

Across

2.The element with electronic configuration 2, 8, 4.

4.The element whose uni negative anion has electronic configuration 2, 8.

5.The element whose di negative anion has electronic configuration 2, 8, 8.

Down

1.The element with electronic configuration 2, 8, 8.

2.The element whose uni positive cation has electronic configuration 2, 8.

3.The element whose di positive cation has electronic configuration 2, 8, 8.

Q.

Which is the correct statement about a proton?

1. Proton is nucleus of deuterium

2. Proton is ionized hydrogen molecule

3. Proton is ionized hydrogen atom

4. Proton is α-particle

Q.

Metals usually have ——— tensile strength.

Q. Arrange the following elements in increasing order of their first ionisation energies.

1. Lithium
2. Boron
3. Carbon
4. Oxygen

Q.

Give the name of the particle which has $18$ electrons, $17$ neutrons and $17$ protons in it.

Q.

A group of two or more non-metals which has negative charge on it is called-

1. ion.

2. complex ion.

3. radical.

4. none of these.

Q.

2. Select those objects from the following which shine:

Glass bowl, plastic toy, Steel spoon, cotton shirt

Q.

Is it true that metals are not monoatomic?Please give a detailed explanation.

Q.

Which of the following are ionic compounds?

NaCl, CCl₄, MgF₂, AgF, BaSO₄, CaF₂, CH₄, SF₄, PCl₅.

Q. Which of the following attains the stable electronic configuration as argon?

1. Carbon
2. Chloride
3. Potassium
4. All of above

Q. The strong electrostatic forces of attraction between oppositely charged ions are called ______

1. Ionic bonds
2. Positive bonds
3. Decomposition bonds
4. Hydrogen bonds

Q. Which of the following metals does not produce bubbles when they interact with hydrochloric acid ?

1. Aluminium
2. Iron
3. Gold
4. Zinc

Q. Non-metals always react with acids to release hydrogen gas.

1. False
2. True

Q.

On rubbing a comb through hair, the comb attracts small pieces of paper. This is because :

1. atoms are made up of charged particles
2. atoms are indivisible
3. comb can conduct electricity
4. comb and paper like each other

Q. Magnesium with atomic number 12 attains the stable electronic configuration of the nearest noble gas :

1. Neon
2. Xenon
3. Helium
4. Argon

Q. Ms Deepika conducted a few experiments to explain the properties of metals and non-metals. She set up the experiments as shown in the given figure.
(i) (ii) (iii) (iv) (v)
She noted the observation as:
(I) No reaction will take place in beakers (iv) and (v).
(II) Hydrogen gas will be evolved in beakers in (i), (ii) and (iii).
(III) A vigorous reaction will take place in beaker (i) while no reaction will occur in beaker II.
(IV) Two different gases will be evolved in beaker (iv).
The correct observations are:

1. II, III and IV only
2. II and IV only
3. II and III only
4. I and III only