Structure of atom

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Quiz based on the topic "structure of atom" for grade 9

Créé par

Prachi Singh

India

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Structure of atom


Structure of atomVersion en ligne Quiz based on the topic "structure of atom" for grade 9 par Prachi Singh 1 According to Thomson's model of the atom, which of the following analogies best describes the arrangement of electrons? a Seeds inside a watermelon b Planets revolving around the sun c A shell hitting s piece of tissue paper d Stones thrown at a barbed-wire fence 2 In Rutherford's experiment, what did the observation that a very small fraction of α-particles were deflected by 180 degree suggest about the atom? a The atom consists mostly of empty space b All positive charge and mass are concentrated in a very small volume c The atom is a solid, indivisible sphere d Electrons are located in the center of the atom 3 According to Neils Bohr, what happens to the energy of an electron while it is revolving in a discrete orbit? a It radiated energy in the form of heat b It continuously loses energy c It does not radiate energy d It gains energy from nucleus 4 Using the formula 2n^2, what is the maximum number of electrons that can be accommodated in the M shell (n=3)? a 18 b 32 c 2 d 8 5 Which sub-atomic particle is absent in the nucleus of a standard Hydrogen atom? a Proton b Electron c Nucleon d Neutron 6 What defines the valency of an element like Magnesium, which has an atomic number of 12? a The number of electrons it needs to lose to achieve an octet b The number of electrons in its K and L shells combined c The total number of protons in its nucleus d The total number of nucleons 7 If an atom has a mass number of 27 and an atomic number of 13, how many neutrons does it contain? a 27 b 40 c 14 d 13 8 Atoms of the same element with different mass numbers are called: a Isotopes b Nucleons c Isomers d Isobars 9 Calcium (atomic number 20) and Argon (atomic number 18) both have a mass number of 40. This pair is an example of: a Noble gases b Isotopes c Isobars d Valence pairs 10 Which isotope is specifically mentioned in the text as being used in the treatment of goitre? a Isotope of iodine b Isotope of Uranium c Isotope of cobalt d Isotope of carbon

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Structure of atom

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Créé par

Téléchargez la version pour jouer sur papier

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Structure of atomVersion en ligne

par Prachi Singh

According to Thomson's model of the atom, which of the following analogies best describes the arrangement of electrons?

In Rutherford's experiment, what did the observation that a very small fraction of α-particles were deflected by 180 degree suggest about the atom?

According to Neils Bohr, what happens to the energy of an electron while it is revolving in a discrete orbit?

Using the formula 2n^2, what is the maximum number of electrons that can be accommodated in the M shell (n=3)?

Which sub-atomic particle is absent in the nucleus of a standard Hydrogen atom?

What defines the valency of an element like Magnesium, which has an atomic number of 12?

If an atom has a mass number of 27 and an atomic number of 13, how many neutrons does it contain?

Atoms of the same element with different mass numbers are called:

Calcium (atomic number 20) and Argon (atomic number 18) both have a mass number of 40. This pair is an example of:

Which isotope is specifically mentioned in the text as being used in the treatment of goitre?