Advertisements
Advertisements
Question
Name the following.
The most abundant element in the universe.
Solution
The most abundant element in the universe - Hydrogen (H)
APPEARS IN
RELATED QUESTIONS
Explain the following.
Sodium dissolves in liquid ammonia to form a solution which shows electrical conductivity.
Explain the following.
BeCl2 is covalent while MgCl2 is ionic.
Explain the following.
Alkaline earth metals have low values of electronegativity; which decreases down the group.
Write a balanced chemical equation for the following.
\[\ce{CO2}\] is passed into a concentrated solution of NaCl, which is saturated with \[\ce{NH3}\].
Write a balanced chemical equation for the following.
Beryllium oxide is treated separately with aqueous HCl and aqueous NaOH solutions.
Answer the following question.
A water sample, which did not give lather with soap, was found to contain \[\ce{Ca(HCO3)2}\] and \[\ce{Mg(HCO3)2}\]. Which chemical will make this water give lather with soap? Explain with the help of chemical reactions.
Name the following.
Ions having high concentration in cell sap.
Which of the following is the CORRECT order for alkaline earth metals?
When beryllium is ignited in air, the products are ____________.
Which of the following alkaline earth metals has the least affinity towards oxygen?
The oxidation states of O atom in Na2O2 and KO2 are ____________, respectively.
Alkaline hydrolysis of which among the following compounds leads to the formation of a racemate?
In the following reaction, metal 'M' CANNOT be ____________.
\[\ce{M + O2 ->[\Delta] MO2}\]
Which among the following is used as a source of oxygen in submarine in emergency breathing apparatus?
Which among the following elements has highest ionisation enthalpy and bears a diagonal relationship with aluminium?
What is the electronic configuration of third element of group-2 in periodic table?
The element that does not form acidic oxide is ______.
KO2 (potassium superoxide) is used in oxygen cylinders in space and submarines because it ______.
Which among the following elements of group-2 exhibits anomalous properties?
Which of the following is most soluble in water?
Which of the following is likely to undergo racemisation during alkaline hydrolysis?
