Home
Class 11
CHEMISTRY
An element occupies group number 1 and p...

An element occupies group number 1 and period number 3. This element heated in air gives compound A. With water it gives compound B - a strong base. With ammonia gives compound C, which is used as a reducing agent in organic chemistry. Identify the element A,B and C.

Text Solution

Verified by Experts

(i) As per the position in the periodic table this element occupying group number 1 and period number 3 is sodium. (ii) When heated in air, it forms sodium peroxide (A)
`4 Na +O_2 rArr 2 Na_2O_2`
(iii) With water, sodium gives sodium hydroxide (B)
`2Na +2H_2O rArr 2NaOH +H_2`
(iv) With ammonia, sodium gives sodamide (I)
`2Na + 2NH_(3) overset(570-670 K)rarr 2 NaNH_2 +H_2`
The element is sodium.
The compound A is sodium peroxide.
The compound B is sodium hydroxide.
The compound C is sodamide.
Promotional Banner

Topper's Solved these Questions

  • GROUP 1 s - BLOCK ELEMENTS

    NCERT TELUGU|Exercise QUESTIONS (A. CHOOSE THE BEST ANSWER)|13 Videos

  • GROUP 1 s - BLOCK ELEMENTS

    NCERT TELUGU|Exercise QUESTIONS (B.FILL IN THE BLANKS)|15 Videos

  • AROMATIC HYDROCARBONS

    NCERT TELUGU|Exercise Questions|25 Videos

Similar Questions

Explore conceptually related problems

An element occupies group number 1 and period number 2. This element burns with air and forms compound A. With water, it gives compound B, with hydrogen it forms an ionic compound C. Identify the elements, A, B and C.

An element occupies group number 15 and period number 2 reacts with hydrogen under high pressure and in the presence of a catalyst it terms a hydride (A). In presence of excess of air and in the presence of platinum it forms an oxyacid (B). Identify the element, A and B.

An alkali metal hydride (NaH) reacts with diborane in 'A' to give a tetrahedral compound 'B' which is extensively used as reducing agent in organic synthesis. The compounds 'A' and 'B' respectively are

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

An element occupies group No.16 and period number 2. This element on passing through silent electric discharge forms (A). (A) also reacts with lead sulphide and forms (B). (A) also reacts with BaO_(2) and forms (C). It reacts with H_(2)O_(2) and forms (D). Identify the element (A), (B), (C) and (D).

An element occupies group no.13 and period number 2 is an representative element of that group reacts with carbondioxide and forms an oxide (A). (A) reacts with CuSO_(4) give blue beads (B). Identify the element compound (A) and (B). Write the reaction.

Define element and compound. Give examples.

An isotope of hydrogen reacts with oxygen to give compound (A), which is used as a moderator in nuclear reactor. Like hydrogen, this isotope also undergoes addition reaction. It reacts with ethylene to give compound B, which is a saturated hydrocarbon. Identify the element A and B. A is radioactive.

The element of Group VA that exhibits maximum number of oxidation states in its compounds

The chief ore of Zinc, on roasting gave a compound A, which on reduction by carbon, gives B. Identify A and B, give the chemical reactions.