मराठी

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 - Science

Advertisements
Advertisements

प्रश्न

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
जोड्या लावा/जोड्या जुळवा

उत्तर

  (A)   (B)
(a) Ernest Rutherford (iii) Concept of nucleus
(b) J.J.Thomson (iv) Discovery of electrons
(c) Dalton (i) Indivisibility of atoms
(d) Neils Bohr (ii) Stationary orbits
(e) James Chadwick (vi) Neutron
(f) E. Goldstein (vii) Canal rays
(g) Mosley (v) Atomic number
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 4: Structure of the Atom - Short Answer Questions [पृष्ठ ३१]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science [English] Class 9
पाठ 4 Structure of the Atom
Short Answer Questions | Q 30. | पृष्ठ ३१

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

An element has an atomic number of 11 and its mass number is 23. What is the arrangement of electrons in the shells? State nuclear composition of an atom of the element.


The atomic number of an element E is 16. The number of electrons in its ion E2– 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 the number 6.022 × 1023 ?


What name is given to this number ?


If 12 gram of carbon has x atoms, then the number of atoms in 12 grams of magnesium 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)


If one gram of sulphur contains x atoms, calculate the number of atoms in one gram of oxygen element.

(Atomic masses : S = 32 u ; O = 16 u)


How many grams of magnesium will have the same number of atoms as 6 grams of carbon ?
(Mg = 24 u ; C = 12 u )


Which has more number of atoms?

100g of N2 or 100 g of NH3


A silver ornament of mass ‘m’ gram is polished with gold equivalent to 1% of the mass of silver. Compute the ratio of the number of atoms of gold and silver in the ornament.


. 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?


In the atom of an element X, 6 electrons are present in the outermost shell. If it acquires noble gas configuration by accepting requisite number of electrons, then what would be the charge on the ion so formed?


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


An element X has a mass number 4 and atomic number 2. Write the valency of this element?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×