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Subject: Chemistry, asked on 29/10/17

[ NO LINKS ].Answer the following question given below :

Q. 2. Fill in the blanks with suitable words:
1. An atom of an elements is represented by a_________________________________ .
2. The energy levels or energy shells are filled in order of increasing. _________________________________ 
3. The electrons present in K and L shell are known as _________________________________ 
4. Element with atomic number 16 is. _________________________________ 
5. The maximum number of electrons is any shell is given by the formula  _________________________________ 
 

Subject: Chemistry, asked on 29/10/17

[ NO LINKS ].Answer the following question given below :
Q.1. Give one word answer for the following :
1. The central, heavy part of the atom containing neutrons and protons.
2. The number of protons present in the nucleus of an atom.
3. The total number of protons and electrons present in the nucleus of an atom.
4. Elements having 1, 2 or 3 electrons in their outermost orbit.
5. Elements having 4, 5, 6, 7 or 8 electrons are known as.

Subject: Chemistry, asked on 22/9/17

What is a Colloid ? Why is milk considerd to be a colloid ? (NO LINKS).

Subject: Chemistry, asked on 19/9/17

K4Fe(CN)6 structure

Subject: Chemistry, asked on 17/5/17

14.b) give two differences between sodium atom and sodium ion.​​

Subject: Chemistry, asked on 9/5/17

6. how was it shown that an atomic nuclei are positively charged ?

Subject: Chemistry, asked on 9/5/17

4. give the evidence for the existence of nucleus in an atom.

Subject: Chemistry, asked on 9/5/17

5. how was it shown that an atom has a lot of space within it ?

Subject: Chemistry, asked on 9/5/17

3. give experimental evidence to show that 
(i) practically the whole mass of an atom is centred at its nucleus.
(ii) the nucleus of an atom is positively charged

Subject: Chemistry, asked on 9/5/17

2. what important information is furnished about the nucleus of an atom by a-particle scattering experiment of Rutherford ?

Subject: Chemistry, asked on 9/5/17

1. what are cathord rays and in what respect do they differ from positive rays?​​

Subject: Chemistry, asked on 9/5/17

20.
(i) give the names and symbols of three monoatomic gases, which are chemically inert.

Raj
Subject: Chemistry, asked on 11/12/16

An _____ [atom/ion] is capable of independent existence in solution.
 

Subject: Chemistry, asked on 20/2/16

what is a group of atoms carrying a charge called?

Subject: Chemistry, asked on 30/11/17

if hydrogen is a non metal why its valency is +1

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