Question

Q1.Identify the element having 7 proton and 7
neutrons *
a)Silicon
b)Aluminium
c)Carbon
d)Nitrogen
Q2. The properties of the substance are entirely
different from its constituents in a
a)elements
b)compounds
c)mixtures
d)impure substance​

Answer 1

Answer:

1) Nitrogen  2) Compounds

Explanation:

1) Nitrogen is the answer as it has 7 protons, neutrons and electrons each. It is the seventh element in the periodic table with 2 electrons in its first shell and 5 in its second.

2) In a compound the properties of it are completely different from its constituents. An example of this is H2O. Here, water has completely different properties from its constituents which are hydrogen and oxygen.

Answer 2

Answer:

Nitrogen

Explanation:

you don't need to know the no of neurons and electrons of an atom when identifying what element it is !

because every element is specialised by the no of protons . every element can be similar each other at some features but the no of protons can't , for example all nitrogen atoms have 7 protons in their nuclei amd contrarily , any atom having 7 protons is nitrogen .

so in one day if that nitrogen atom has less or more protons , it won't be nitrogen anymore .

hope u understand !