Fill the gaps on periodicity

Exercise and reference answers

Missing parts

1. Answer

   number

   Choices

   1. number
   2. weight
   3. volume

2. Answer

   p

   Choices

   1. p
   2. s
   3. d

3. Answer

   falls

   Choices

   1. falls
   2. grows
   3. holds

4. Answer

   grows

   Choices

   1. grows
   2. falls
   3. holds

Complete the statement

Properties are periodic functions of the atomic {0}. Groups 13 to 18 form the {1} block. Atomic size {2} across a period and {3} down a group.

Instructions

Tap a word to drop it into the empty slot.

Explanation