Sodium will have a larger radius. Look up the atomic radius Trend
The correct answer is b, 18 protons
Mass = no. of moles x molecular weight
m = n x Mr
m = 2.5 mol x (24 + [16 x 2])
m = 140g
Burrows, tracks, coprolites, nests and footprints are examples of traces that can be found in a fossil.
Answer:
Option D
Explanation:
Hydronium ion concentration is a measure of pH of a solution.
The mathematical equation for the same is [H3O+] = 10-pH
OR
[H3O+] = antilog (- pH)
Hence, option D is correct
