Advertisements
Advertisements
प्रश्न
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Advertisements
उत्तर
Y
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Elements combine in definite proportions to form compounds.
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Define an ionic compound.
WRITE SHORT ANSWER
What is radioactivity?
Write the names of `"Na"_3"PO"_4` compounds :
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Fill in the blank
A deficiency of electrons produces a ________ charge.
Write the full form of IUPAC.
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Define the following term:
Atom
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
Name the gas that.
Turns moist starch iodide paper blue black.
A compound containing one atom of carbon and two atoms of oxygen is ______.
K: Potassium:: C: ______.
Define – Atom.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Which of the following statements made by Dalton has not undergone any change?
An element is composed of ______ atoms.
