Advertisements
Advertisements
Question
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Advertisements
Solution
Does the particle have an excess of electrons or a deficiency of electrons = excess of electrons
APPEARS IN
RELATED QUESTIONS
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
What is radioactivity?
ANSWER IN DETAIL
How are isobars different from isotopes ?
Write the names of the elements present in the:-
Ammonia
Write the names of the elements present in the:-
Glucose
Write the names of the elements present in the:-
Acetic acid
Fill in the blank:
Atoms are _____
What does an atom consist of ? Explain.
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
What value has been given to the mass of this reference atom ?
Is it possible to see atoms these days ? Explain your answer.
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
Define the following term with an example.
Compound
______ is the smallest particle of an element.
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
Atoms have a radius of the order ______.
