Answer:
D. Cyclic alkane
Explanation: there is no double or triple bond
Answer:
Is B, it is B because you don't need arrows on it.
Mercury is the only metal that is a liquid at room temperature.
your answer is A.
It is used in thermometer.
Answer:
Nitrogen
Explanation:
Elements in period two includes lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon.
According to periodic trends, the electro negativity values are expected to increase across the period up to fluorine. Hence, as we go right wards, we encounter elements with higher electronegative values.
While lithium has an electronegative value of 1 , the electronegative value of element nitrogen is thrrr times this which is equal to three
Robert A. Millikan and Harvey Fletcher performed the oil drop experiment.