Structure of Atom

Q.

Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, cold-drink, smell of perfume.

1. Chair, air, love, cold-drink, smell of perfume
2. Love, smell, hate, almonds, thought, cold
3. Chair, air, almonds, cold-drink
4. Thought, cold, cold-drink, smell of perfume

Q.

Write the distribution of electrons in an atom of the element whose atomic number is 13.

Q.

Given the element, sodium has mass number 23 and atomic number 11. Find the number of protons, number of neutrons, number of electrons and electronic configuration of the same.

Q.

Draw the atomic structure of ${}_3{}^7\mathrm{Li}$ geometrically, clearly showing the (a) number of protons (b) number of neutrons and (c) number of electrons in various shells around nucleus .

Q. The number of columns and rows present in the periodic table are ____ and ___

1. 8 , 18
2. 18, 18
3. 7, 18
4. 18, 7

Q.

8(d) Define periodic table.

Q.

Complete the following:

Symbol	Atomic number	Mass number	Protons	Neutrons	Electrons	Electronic configuration
Argon ${}_{18}{}^{40}\mathrm{Ar}$

Q.

Complete the following table:

Symbol	Atomic number	Mass number	Protons	Neutrons	Electrons	Electronic configuration
Chlorine ${}_{17}{}^{35}\mathrm{Cl}$					17

Q.

Which of the following are matter?
Chair, air, love, smell, hate, almonds, thought, cold, cold-drink.

1. Chair, air, love, cold-drink, hate

2. Love, smell, hate, almonds, thought, cold

3. Chair, air, almonds, cold-drink

4. Thought, cold, cold-drink, almonds

Q. Which of the following statements is not a postulate of Dalton's theory?

1. Atom can neither be created nor destroyed
2. Atoms are extremely tiny indivisible particles
3. Atoms combine in complex fractional ratios
4. All the atoms of a particular element have identical properties

Q. The first shell of an atom can contain only two electrons.

1. False
2. True

Q. According to Dalton's atomic theory, atoms:

1. are divisible
2. are indivisible
3. cannot be destroyed
4. cannot be created

Q. The first shell of an atom can contain only two electrons.

1. False
2. True

Q. The sum of total number of electrons that can be accomodated in first, second and third energy shells is

1. 18
2. 20
3. 24
4. 28

Q. $\left(a\right)$. What are the two main parts of which an atom is made of?