Answer:
The most reactive group of elements are found in group 1 which are alkali metals.
Explanation:
The reason why they are so reactive is because they only electron in the outer shell so this causes the to lose that one electron in ionic bonding with other elements.
Answer is: temperature of helium is -296,95°C.
The temperature T<span> in degrees Celsius (°C) is equal to the temperature </span>T in Kelvin (K) minus 273,15: T(°C) = T(K) - 273.15.
T(He) = 4,2 K.
T(He) = 4,2 K - 273,15.
T(He) = -268,95°C.
The Celsius scale was based on 0°C for the freezing point of water and 100°C for the boiling point of water at 1 atm<span> pressure.</span>
Organs because the tissue when form its make organs
