The atomic number of an element X is 8 and that of element Y is 12 . Write down the symbols of the ions you would expect to be formed from their atoms.

The atomic number of an element X is 8 . So, the electronic configuration of the atom will be 2 , 6 . To complete octet, it gains two-electron and forms an anion, i.e. X 2 - . The atomic number of an element Y is 12 . So, the electronic configuration of the atom will be 2 , 8 , 2 . To complete octet, it loses two electrons and forms a cation, i.e. Y 2 + .

EASY

Earn 100

What is the name of ${CO}_{3}^{- 2}$ ion?

50% studentsanswered this correctly

Important Questions on Atoms, Molecules and Chemical Reactions

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Give one phrase for the following statement:

Process of formation of ions from molecules which are not in the ionic state.

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

A substance on treatment with dilute

H_{2} {SO}_{4}

liberates a colourless gas which produces (i) turbidity with baryta solution and (ii) turns acidified dichromate solution green. The reaction indicates the presence of

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

The following is the correct decreasing order of the ionic radii-

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Our teeth enamel is made up of _____.

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Which one of the following is cation

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

The number of protons in one atom of an element

X

8

. What will be the number of electrons in its ion

X^{- 2}

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

A positively charged body has

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

The atomic number of an element

X

8

and that of element

Y

12

. Write down the symbols of the ions you would expect to be formed from their atoms.

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Identify the cation and anion present in the compound potassium dichromate.

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

What is an ion? Explain with examples.

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Give one example each of
a. cation
b. anion
c. polyatomic ion.

HARD

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

The number of protons in one atom of an element

X

8

. What will be the number of electrons in its ion

X^{2 -}

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

What are polyatomic ions? Give examples.

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Write down the electronic configuration of (i) magnesium atom, and (ii) magnesium ion. (Atomic Number of

M g = 12

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Write the cations and anions present (if any) in

NaCl

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

What are polyatomic ions? Give an example.

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Write the cations and anions present (if any) in

H_{2}

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

{}_{19}^{39}K

changes to an ion of the nearest noble gas. What kind of change occurs when it forms a K ion?

EASY

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

One electron is present in the outermost shell of the atom of an element X. What would be the nature and value of charge on the ion formed if this electron is removed from the outermost shell?

MEDIUM

Science>Chemistry>Atoms, Molecules and Chemical Reactions>Ions

Write the cations and anions present (if any) in

{NH}_{4} {NO}_{3}

What is the name of CO3-2 ion?

Important Questions on Atoms, Molecules and Chemical Reactions

Learn and Prepare for any exam you want !

What is the name of ${CO}_{3}^{- 2}$ ion?