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सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Elements X and Y Have 1 and 7 Electrons in Their Outermost Shell Respectively. What Will Be the Charge Present of the Molecule Xy After Chemical Combination? - Chemistry

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प्रश्न

Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

What will be the charge present of the molecule XY after chemical combination?

एक शब्द/वाक्यांश उत्तर

उत्तर

electrically neutral

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पाठ 4: Atoms, Molecules and Radicals - Additional questions

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सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 4 Atoms, Molecules and Radicals
Additional questions | Q 6.5

संबंधित प्रश्‍न

Write the names of the elements present in the:- 

Glucose


How did Neils Bohr visualise the atom ?


Fill in the blank

If an atom gains an electron, it is called an _______


Why is it not possible to see an atom even with the most powerful microscope ?


Match the pairs.

Group 'A' Group 'B'
a. Proton i. Negatively charged
b. Electron ii. Neutral
c. Neutron iii. Positively charged

Draw the diagrams representing the atomic structures of the following: Neon


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which will form negative ion?


A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –

  1. ammonium
  2. bisulphate
  3. carbonate

state the group of atoms present in each radical.


Select the correct answer to the statement given below:

The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.


Select the correct answer to the statement given below:

Imaginary path around the nucleus of an atom in which electrons revolve.


The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium


Define the following term with an example.

Element 


Define – Atom.


______ is the smallest particle of an element.


Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars. 


Atoms of different elements having the same number of ______ are called isotones.


A change in the physical state can be brought about


Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order

  1. Rutherford’s atomic model
  2. Thomson’s atomic model
  3. Bohr’s atomic model

What is the fundamental particle of an element?


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