Advertisements
Advertisements
Question
The symbols of the elements cobalt, aluminium, helium and sodium respectively written by a student are as
follows. Which symbol is the correct one ?
Options
CO
AL
He
So
Solution
He
He is the correct symbol of helium.
APPEARS IN
RELATED QUESTIONS
Define: Elements-
Define: Compounds
The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of
an element as its symbol, was :
What is meant by atomicity? Name the diatomic element.
State which element exists in the highest percentage in human body.
Give three reasons why – carbon dioxide is considered a compound, while carbon – an element.
Write the radical of the following valency:
Hydroxide
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Tin
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Sulphate
Define Alchemy.
