Answer:
Krypton is considered to be non-toxic.
Characteristics: Krypton is a colorless, odorless, inert gas. Although it is extremely unreactive krypton can react with the very reactive gas fluorine.
Classification: Krypton is a noble gas
State: gas
Atomic weight: 83.80
Electron shells: 2,8,18,8
<u>Toxic to Superman</u>
Hope this helps :)
<u>Answer:</u>
Sodium atom is larger than Magnesium atom.
<u>Explanation:</u>
Looking at the electronic configurations of Sodium and Magnesium:
,
we can see that they both have their valence electrons in the 3rd shell.
But because Magnesium has a higher nuclear charge of +12 because of its 12 protons than that of Sodium's +11, the nucleus of Magnesium attracts its outer electrons more strongly than Sodium does. This makes the Magnesium atom smaller.
Answer:
Chemical
Explanation:
Whenever "burns" is being used, most of the time it is a chemical change
I'm pretty sure the answer is 'fronts'
Answer:
142.36 kg
Explanation:
volume of water in the lake = surface area x depth
= 18.5 x ( 1760 x 3 )² x 39 ft³
= 2.011 x 10¹⁰ ft³
= 2.011 x 10¹⁰ x 28.3168 liter .
= 56.945 x 10¹⁰ liter .
concentration of mercury = .25 x 10⁻⁶ g / liter
= 25 x 10⁻⁸ g / liter
= 25 x 10⁻¹¹ kg / liter
mass of mercury in the water of lake
= 25 x 10⁻¹¹ x 56.945 x 10¹⁰ kg
= 142.36 kg .
