Question

Q1.Fill in the blanks – (5)

1.0.5 mole of calcium has mass of ______.

2.64grams of oxygen gas contains ______moles of oxygen atoms .

3.A sulphide ion has negative charge because it contains less _____than_____.

4.K shell can have _____ (number) of electrons.

5.Protons are present in __________ . give me fast plzzz ​

Answer 1

Answer:

I can't answer it sorry

Explanation:

thank you