मराठी

Classify each of the following on the basis of their atomicity. F2 NO2 N2O C2H6 P4 H2O2 P4O10 O3 HCl CH4 He Ag

Advertisements
Advertisements

प्रश्न

Classify each of the following on the basis of their atomicity.

  1. F2
  2. NO2
  3. N2O
  4. C2H6
  5. P4
  6. H2O2
  7. P4O10
  8. O3
  9. HCl
  10. CH4
  11. He
  12. Ag
टीपा लिहा
Advertisements

उत्तर

Monoatomic with atomicity (1) = He, Ag

Diatomic with atomicity (2) = F2 HCl

Polyatomic with atomicity > 2 :

Atomicity (3) = NO2, N2O, O3

Atomicity (5) = CH4

Atomicity (8) = C2H6

Atomicity (14) = P4O10 

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Atoms and Molecules - Short Answer Questions [पृष्ठ २१]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science Exemplar [English] Class 9
पाठ 3 Atoms and Molecules
Short Answer Questions | Q 21. | पृष्ठ २१

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

If the number of electrons in an ion Z3– is 10, the atomic number of element Z will be :


The number of electrons in an ion Y2+ is 10. The atomic number of element Y is most likely to be :


What is the numerical value of Avogadro number ?


What name is given to this number ?


What is the number of molecules in 1.5 moles of ammonia ?


If 32 g of sulphur has x atoms, then the number of atoms in 32 g of oxygen will be :


Which of the following has the maximum number of atoms ?


What weight of oxygen gas will contain the same number of molecules as 56 g of nitrogen gas ?

(O = 16 u ; N = 14 u)


What mass of nitrogen, N2, will contain the same number of molecules as 1.8 g of water, H2O ?

(Atomic masses : N = 14 u ; H = 1 u ; O = 16 u)


The mass of one atom of an element X is 2.0 × 10–23 g.

Calculate the atomic mass of element X.

What could element X be ?


Which has more number of atoms?

100g of N2 or 100 g of NH3


Compute the difference in masses of one mole each of aluminium atoms and one mole of its ions. (Mass of an electron is 9.1×10–28 g). Which one is heavier?


. A sample of ethane (C2H6) gas has the same mass as 1.5 ×1020 molecules of methane (CH4). How many C2H6 molecules does the sample of gas contain?


Match the names of the Scientists given in column A with their contributions towards the understanding of the atomic structure as given in column B

  (A)   (B)
(a) Ernest Rutherford (i) Indivisibility of atoms
(b) J.J.Thomson (ii) Stationary orbits
(c) Dalton (iii) Concept of nucleus
(d) Neils Bohr (iv) Discovery of electrons
(e) James Chadwick (v) Atomic number
(f) E. Goldstein (vi) Neutron
(g) Mosley (vii) Canal rays

The atomic number of calcium and argon are 20 and 18 respectively, but the mass number of both these elements is 40. What is the name given to such a pair of elements?


Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×