in the modern periodic table all the elements are listed in increasing order of their dash it starts with lightest element dash and proceeds to the heavier elements in the modern periodic table at dash groups and periods the first period contains only dash elements why the seventh period contains dash elements
Answers
Answered by
4
Answer:
Atomic Number,Hydrogen,18 groups and 7 periods,7,6
Explanation:
varaddaithankar:
Are the answers correct I have a doubt in 3rd blank
I will send you the pic of options
Similar questions