Question

6. Write down the word that will correctly complete the
following sentences :
(a) Relative atomic mass of a light element up to calcium
is
approximately .......... its atomic number
(b) The horizontal rows in a periodic table are called
(c) Going across a period left to right, atomic size..............​

Answer 1

Answer:

I know the ans but first mark me as brainlist

Answer 2

Explanation:

a) twice

b) periods

c) decreases