Advertisements
Advertisements
Question
Write the names of the elements present in the:-
Ammonia
Solution
Ammonia : Nitrogen, hydrogen.
APPEARS IN
RELATED QUESTIONS
Write the names of `("NH"_4)_2"SO"_4` compounds:
Write the names of `"Na"_3"PO"_4` compounds :
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
Fill in the blank
An _______ is electrically neutral.
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
Which of the following statement is correct about the atom of an element ?
The electron shell ______ is nearest to the nucleus.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form negative ion?
Draw the basic structure of an atom representing its –
- Subatomic particles
- Nucleus
- Orbits or shells.
The basic unit of matter is ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Metal
An element is composed of ______ atoms.
Atoms of different elements having the same number of ______ are called isotones.
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let Sn be the distance travelled by the block in the interval t = n – 1 to t = n. Then, the ratio `S_n/(S_(n + 1))` is ______.