Isotope was discovered by

കൽസ്യത്തിന്റെ അയിര് ഏതാണ് ?

യുറേനിയത്തിന്റെ അയിര് ഏതാണ് ?

The element having no neutron in the nucleus of its atom :

What is the electronic configuration of an oxide ion O^2- ?

Which one of the following is not the electronic configuration of atom of a noble gas?

The electronic configuration of an atom an element with atomic number 8 is...

Identify the element which shows variable valency.

The term Element was coined by?

The element used to find Atomic mass unit?

The number of neutrons in an atom of Hydrogen is

The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon?

What is the number of valence electrons of Aluminium?

How many valence electrons does an oxygen atom have

The elements having same atomic number but different mass numbers are called ______

The correct electronic configuration of sodium is:

Which isotope of hydrogen contains only one proton and no neutron in its nucleus?

How many electrons does the outermost shell of Neon have

Atomic mass of an element is equal to the sum of

Which of the following elements is commonly present in petroleum, fabrics and proteins?

What is the valency of carbon?

The basic element present in all organic compounds is

The element which is known as the enemy of copper is

Which element is known as king of poison?

The elements which is kept in water is

The method used to purify sulphide ores is

The element which has highest melting point

Element used to get orange flames in fire works?

Element having the name of Earth?

The radioactive Gaseous element?

Which one of the following elements is very rare?

Which of the following chemical elements has the highest electron affinity?

Aluminium would have similar properties to which of the following chemical elements?

Which of the following chemical elements is not a halogen?

Which was the first element that was made artificially?

Atomic number of Uranium is?

Which of the following scientist arranged the elements on the basis of Octave theory?

The first attempt to classify elements as triads was done by?

Atomic number of Gold (Au) is?

Which of the following elements has 2 shells and both are completely filled?

The elements with atomic numbers 2, 10, 18, 36, 54 and 86 are all

First of all the elements were classified by

______ is used to provide inert atmosphere.

ആദ്യ മനുഷ്യ നിർമ്മിത മൂലകം ഏതാണ് ?

അടിസ്ഥാന ഓക്സൈഡ് രൂപപ്പെടുന്ന മൂലകത്തിൻ്റെ ആറ്റോമിക് നമ്പർ ഏതാണ് ?

മൂലകങ്ങളുടെ വർഗീകരണത്തിൽ അഷ്ടക നിയമം (Law of Octaves) ആവിഷ്കരിച്ച ശാസ്ത്രജ്ഞൻ ആര് ?

പ്രപഞ്ചത്തിലെ ഏറ്റവും സമൃദ്ധമായ മൂലകം ഏതാണ്?

ഹീലിയത്തിൻ്റെ ആറ്റോമിക് നമ്പർ എന്താണ് ?

താഴെറയുന്നവയിൽ ഏതാണ് അസിഡിക് ഓക്സൈഡ് ഉണ്ടാക്കുന്നത് ?

താഴെപ്പറയുന്നവയിൽ ഏതാണ് പരമാവധി എണ്ണം വാലൻസ് ഇലക്ട്രോണുകളെ പ്രദർശിപ്പിക്കുന്നത് ?