Krypton. The atomic radius decreases as you go across a period.
The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
Answer:
D: Carbon
Explanation:
Carbon is the sixth element with a total of 6 electrons in the periodic table. Hence the atomic number Z = 6. The ground state electron configuration of carbon is 1s2 2s2 2p2. An excited state electron configuration of carbon is 1s2 2s1 2p3.
Answer:
Explanation:
exothermic reactions involve release of heat whereas endothermic reaction involve absorption of heat.
A neutral atom of potassium has 19 electrons.