Question

State True or False :
1. The zig-zag line separates the metals from non metals in the periodic table i.e. metals are on the
left side and nonmetals are on the right side.
2. Mendeleev arranged elements in the increasing order of their atomic masses.
3. Mendeleev was the first who successfully classified all known elements.
4. When oils and fats are allowed to stand for a long time, they become rancid.​

Answer 1

Answer:

1. true

2.true

3.true

4.false

hope it helps pls mark the brainliest

Answer 2

Answer:

1) True

2) True

3) True

4) False

Explanation:

mark as brainlist