The period 2 elements are the chemical elements in the second row (or period) of
the periodic ... Period 2 is the first period in the periodic table that periodic trends
can be drawn from. Period 1 ...
FLUORINE - I am a gas with a mass number of 19. 19. POTASSIUM - I am the first
element in the fourth period used in making fertilizer. 22. TIN - You can find me ...
Potassium ... What element is the first element in the fourth period used in making
fertilizer.? The A is Potassium. 3 people found this useful. Edit. Share to:
Answered by The ...
Am. Cm. Bk. Cf. Es. Fm. Md. No. Lr. Rf. Db. Sg. 102.44. Chromium. 1. 2. 3. 4 ...
This element is used in ammonia production, as a lifting gas, as an alternative
fuel, and ... In 1868 the French astronomer Pierre Janssen first detected helium
as an unknown .... Oxygen is used in welding, and in the making of steel and
Am. (243). 96. Cm. (247). 97. Bk. (247). 98. Cf. (249). 99. Es. (254). 100. Fm ...
Hydrogen is estimated to make up more than 90% of all the atoms or three ....
Janssen obtained the first evidence of helium during the solar eclipse of ...
Helium has the lowest melting point of any element and is widely used in
sulfur or sulphur , nonmetallic chemical element; symbol S; at. no. 16; at. wt. ...
The greatest portion, nearly 75 percent, of sulfuric acid is used to make fertilizers.
.... At 10 a.m. or 11 a.m. they get an empty feeling in their stomachs and feel an
intense hunger. ... If symptoms do not improve after the recommended time
Am. Gd. Cm. Tb. Bk. Dy. Cf. Ho. Es. Er. Fm. Tm. Md. Yb. No. Lu. Lr. Although ... It
has however been used in illuminated signs to produce a green-yellow light. ...
What is the first element that does not appear in order of its atomic mass in the
Periodic Table? .... Fourth period The elements in this period have 4 electron
Barium is a reactive metallic element of the alkaline-earth series of metals ....
Alnico, an alloy of nickel, cobalt and aluminum is used to make permanent
magnets. .... The metal is the fourth most abundant element by weight that makes
up the crust ... Lanthanum is a lustrous, malleable, ductile, fairly soft metal and is
the first in ...
The period in human history beginning in about 1200 B.C. is called the Iron Age.
It was at about this time that humans first learned how to use iron metal. But in
some ways, ... The best known and most widely used alloy of iron is steel. ... Iron
is the fourth most abundant element in the Earth's crust. .... Oct 15, 2015 @ 4:04
Salts of the Group 1A elements tend to be extremely soluble in water. ... relatively
large (compared to other ions from the same period), their charges densities ...
the form water and of organic compounds), making it the 10th most abundant
element. .... process to synthesize ammonia (NH3), which is widely used in