Kailphshadle Kailphshadle
  • 01-01-2017
  • Biology
contestada

What element is a gas with a mass number of 19?

Respuesta :

tako1
tako1 tako1
  • 01-01-2017
Fluorine

Check out the periodic table. Exact mass number of Fluorine should appear as 18.99...
Answer Link

Otras preguntas

Rome fell in the year 476 to.a German tribe named
What is 2/3 divided by 4/5
Given the balanced equation: I2(s) + energy ==> I2(g) As a sample of I2(s) sublimes to I2(g), the entropy of the sample (1) increases because the particles a
The ultimate decision by Hitler to exterminate all Jews
Which change is exothermic? (1) freezing of water(2) melting of iron(3) vaporization of ethanol(4) sublimation of iodine
Which polyatomic ion contains the greatest number of oxygen atoms? (1) acetate (3) hydroxide (2) carbonate (4) peroxide
Write the inequality in interval notation X is greater than or equal to negative 4
Why Do Hazel Eyes Change Color?
Compared to a 26-gram sample of NaCl(s) at STP, a 52-gram sample of NaCl(s) at STP has(1) a different density(2) a different gram-formula mass(3) the same chem
At standard pressure, which element has a melting point higher than standard temperature? (1) F2 (3) Fe (2) Br2 (4) Hg