Question

physical and chemical properties of zinc​

Answer 1

Answer:

Zinc is a metal . It has atomic number of 30 and it is in group 12 and period 4 of the perodic table. .

Physical properties of zinc metal are -

• It has den­si­ty of 7.13 g/cm³ and its col­or is bluish-white.

• It has a melt­ing point of 420 °C and its elas­tic­i­ty and mal­leabil­i­ty in­creases when heat­ed to ap­prox­i­mate­ly 100 °C .

• It has a boil­ing point of 906 °C and

at tem­per­a­tures above 200 °C it los­es its elas­tic­i­ty and be­comes a grey pow­der.

• It has high heat ca­pac­i­ty and heat con­duc­tiv­i­ty that is it is a good con­duc­tor.

Chemical properties of Zinc are -

• zinc re­acts rapid­ly with air, grad­u­al­ly form­ing a dull grey zinc ox­ide coat­ing.

• zinc also re­acts with halo­gens, oxy­gen, chalco­gens, al­ka­lis, acids, am­mo­nia and am­mo­ni­um salts, and even with less ac­tive met­als.

• Zinc re­acts with both acids and al­ka­lis, mak­ing it an am­pho­ter­ic met­al. When re­act­ing with al­ka­lis, the el­e­ment forms com­plex com­pounds known as hy­droxo-zin­cates.