Question

* Fill up the blanks:

1) Carbon possesses _____ electrons in its outer most shell.

2) There are ____ elements which are known at present.

3) In flowering plant, fertilization of egg cell occurs in _______.

4) The idea of evolution of species by natural selection was given by _________.

5) ______ is a greenhouse gas.

6) Chipko andolan originated from a ____ village in Garhwal. ​

Answer 1

Answer:

Thus, it is relatively easy to predict the chemical properties of an element if one knows the properties of the elements around it. Since 2016, the periodic table has 118 confirmed elements, from element 1 (hydrogen) to 118 (oganesson).