b. graduated cylinder
c. ruler
d. thermometer
Answer:
A. test tube
Explanation:
edg 2022
B. He, H, Al
C. He, Ne, Ar
D. Na, Ca, Al
Set of elements which has similar properties is helium,neon,argon.
Elements in the periodic table are arranged according to their atomic numbers according to modern periodic law which states that properties of elements are a periodic function of their atomic numbers.
In a group, elements have same number of valence electrons as for every element in a group a new shell is added and hence number of valence electrons remain same. In a period, electrons are added to same shell for every element present in the same period,because of which valence electrons do not remain same.
Valence electrons take part in chemical reactions and as they are same for elements present in the same group they have similar properties while for elements present in a period since they have different number of valence electrons they differ in properties.
Learn more about periodic trends ,here:
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B. appetite.
C. culture.
D. activity level.